CN217611210U

CN217611210U - Linear cutting anastomat with pressure induction function

Info

Publication number: CN217611210U
Application number: CN202120774524.1U
Authority: CN
Inventors: 莫易凡; 张帆; 苏志鹏; 林聪杰
Original assignee: Surgaid Medical (xiamen) Co ltd
Current assignee: Surgaid Medical (xiamen) Co ltd
Priority date: 2021-04-15
Filing date: 2021-04-15
Publication date: 2022-10-21
Anticipated expiration: 2031-04-15

Abstract

The utility model relates to a linear cutting stapler with pressure induction, which comprises a stapler body, a staple cartridge clamp, a staple abutting seat, a staple cartridge assembly, a clamping operating assembly and a firing operating assembly; it also includes an induction staple cartridge The sensing mechanism for clamping force between the splint and the anvil seat and the limiting mechanism for controlling the pressing force of the locking handle to increase step by step. The purpose of the utility model is to provide a linear cutting stapler with pressure sensing, which can allow doctors to accurately judge the reasonable height of tissue closure by providing intuitive pressure data or alarms, so as to achieve the best staple closure height and prevent anastomosis. Fistula, oozing or tissue necrosis. The advantages of the utility model are: the utility model is provided with a sensing mechanism for sensing the clamping force between the clamp plate of the staple cartridge and the anvil seat on the clamping operation component of the stapler, so that the doctor can accurately judge the closure of the tissue through the pressure data. reasonable height.

Description

Linear cutting anastomat with pressure induction function

Technical Field

The utility model relates to a straight line cutting anastomat.

Background

A linear cutting stapler is a medical instrument frequently used in surgery on the physiological tissues of the digestive tract, and is often used for completing the cutting and closing operations of the tissues in the general surgical treatment. The tissue is placed between the nail bin and the nail abutting seat according to the working principle of the tissue pressing device, the tissue is reasonably pressed by adjusting the distance between the nail bin and the nail abutting seat, when the distance between the nail bin and the nail abutting seat reaches the effective suturing safety range, the U-shaped anastomotic nail is compressed into a shape similar to B to suture the tissue, and small blood vessels can penetrate through gaps of the B-shaped anastomotic nail to ensure blood supply of anastomotic stoma and far-end tissue.

In the conventional linear cutting anastomosis operation, doctors judge reasonable tissue squeezing degrees completely according to experience, and cannot provide corresponding accurate tissue squeezing thickness and select a proper staple cartridge (namely a proper anastomosis staple height) for performing the operation according to the tissue characteristics of different patients. The error of judging the tissue squeezing thickness according to experience can cause that the postoperative effect discrete type of different patients is great, in case the tissue squeezing range is unreasonable, the nail-forming inconsistent phenomenon can appear to the postoperative symptoms such as tissue necrosis are caused to the tissue that appears to reveal (need carry out manual suture) or coincide nail excessive pressure, have not only influenced the efficiency of operation, have still caused very big misery even injury for the patient.

In the clamping process of the traditional linear cutting anastomosis operation, a closing connecting rod is driven to move forward by pressing a locking handle, the closing connecting rod drives a rotary fixing block, an outer sleeve and a connecting pipe to slide forward, finally a nail bin clamping plate and a nail abutting seat are driven to close by the connecting pipe, and the outer sleeve is sleeved on the connecting rod in a sliding mode and can slide back and forth relative to the connecting rod. The triggering operation of the linear cutting anastomosis operation is controlled by a triggering handle, and the specific structure is shown in a mechanical endoscope product of Qiansheng style.

The prior art has the defects and reasons that:

1. the traditional linear cutting stapler needs to select staples (2.5, 3.5, 3.8 and 4.1 mm) with different heights by depending on a great deal of clinical experience of doctors in the operation so as to meet the operation requirement (after anastomosis, the heights of the staples, such as 'B', are respectively about 1.0, 1.5, 1.8 and 2.0 mm). Because the tissue thickness of each part of the human body is different, there is a certain difference between people. The error of judging tissue pressing thickness according to experience can cause different patients postoperative effect discrete great, hardly guarantees that the operation homoenergetic at every turn and squeezes and be in reasonable nail forming scope, in case the tissue squeezes the scope unreasonable, then nail forming nonconformity phenomenon can appear to the postoperative symptoms such as body fluid is revealed, the tissue dies appear, has not only influenced the effect of operation, causes bodily injury even for the patient.

2. The traditional straight line cutting anastomat directly causes the use limitation of doctors, and due to the fact that clinical experience of doctors with low qualification rate is insufficient, wrong anastomosis nails can be selected, operation failure is caused, or manual suturing at anastomosis holes is needed.

Disclosure of Invention

An object of the utility model is to provide a take forced induction's sharp cutting anastomat, the accessible provides audio-visual pressure data or alarm and lets the accurate reasonable height of judging the tissue closure of doctor to reach the closed height of best anastomotic nail, prevent anastomotic fistula, oozing blood or tissue necrosis.

The purpose of the utility model is realized through the following technical scheme: a pressure-sensitive linear cutting anastomat comprises an anastomat body, a nail bin clamping plate, a nail abutting seat, a nail bin assembly, a clamping operation assembly and a firing operation assembly; the clamping operation assembly comprises a locking handle, a closing connecting rod, a rotating fixing block, an outer sleeve and a connecting pipe, wherein the locking handle is hinged on the anastomat body, the connecting pipe, the outer sleeve and the rotating fixing block are sequentially connected from front to back, the closing connecting rod is connected between the locking handle and the rotating fixing block, the clamping operation assembly further comprises an induction mechanism for inducing the clamping force between the nail bin clamping plate and the nail abutting seat, and a limiting mechanism for controlling the pressing force of the locking handle to increase progressively; the sensing mechanism comprises a pressure detection unit and a numerical display, the pressure detection unit is arranged on the locking handle, the closing connecting rod, the rotating fixing block, the outer sleeve or the connecting pipe, and the pressure detection unit is in signal connection with the numerical display.

Compare prior art, the utility model has the advantages of:

1. the utility model arranges a sensing mechanism for sensing the clamping force between the nail bin clamping plate and the nail abutting seat on the clamping operating component of the anastomat, and can allow doctors to accurately judge the reasonable height of tissue closure through pressure data; the heights of the anastomotic nails are unified, different anastomotic nail heights do not need to be set according to different tissue thicknesses, doctors do not need to select different anastomotic nails according to experiences, and the risk of operation failure caused by insufficient experience of the doctors is eliminated.

2. The locking handle is provided with a limiting mechanism, and a multistage pressure control structure formed by the limiting mechanism when the locking handle is buckled can generate slight mechanical pause and generate sound of 'clicking', so that the gap between the nail abutting seat and the nail bin seat can be accurately controlled, and the pressure of the tissue can be controlled.

Drawings

Fig. 1 is a schematic structural view (clamped state) of a linear cutting stapler with pressure sensing.

Fig. 2 is a schematic structural view (initial state) of a linear cutting stapler with pressure sensing.

Fig. 3 is an enlarged view at a in fig. 1.

Fig. 4 is an enlarged view at B in fig. 2.

Fig. 5 is a schematic view of the structure of the pressure strain gauge.

Description of the reference symbols: the stapler comprises a stapler body 1, a staple cartridge clamping plate 2, a staple abutting seat 3, a staple cartridge assembly 4, a locking handle 5, a barb 5-1, a closing connecting rod 6, a firing rod 7, an outer sleeve 8, a connecting pipe 9, a pressure strain gauge 10, a PCB 11, a numerical value display 12, a limiting block 13, a ratchet 13-1, an elastic reset part 14, a reset button 15, a connecting rod 16, a rotating head 17, a rack 18, a fixed handle 19, a firing handle 20 and a rotary fixing block 21.

Detailed Description

The invention is described in detail below with reference to the drawings and examples:

fig. 1 to 5 are schematic views illustrating an embodiment of a linear cutting stapler with pressure sensing according to the present invention.

A linear cutting anastomat with pressure induction comprises an anastomat body 1, a nail bin clamping plate 2, a nail abutting seat 3, a nail bin assembly 4, a clamping operation assembly and a triggering operation assembly; the clamping operation assembly comprises a locking handle 5, a closing connecting rod 6, a rotary fixing block 21, an outer sleeve 8 and a connecting pipe 9, wherein the locking handle 5 is hinged on the anastomat body 1, the connecting pipe 9, the outer sleeve 8 and the rotary fixing block 21 are sequentially connected from front to back, the closing connecting rod 6 is connected between the locking handle 5 and the rotary fixing block 21, and the clamping operation assembly further comprises an induction mechanism for inducing the clamping force between the nail bin clamping plate 2 and the nail abutting seat 3 and a limiting mechanism for controlling the pressing force of the locking handle 5 to gradually increase;

the sensing mechanism comprises a pressure detection unit and a numerical display 12, the pressure detection unit is arranged on the locking handle 5, the closing connecting rod 6, the rotating fixing block 21, the outer sleeve 8 or the connecting pipe 9, and the pressure detection unit is in signal connection with the numerical display 12.

The pressure detecting unit is not limited to the above-mentioned components, and may be any force-bearing component in the clamping operation assembly.

When the gap between the nail abutting seat 3 and the nail bin assembly 4 is reduced in the closing process, pressure is generated on tissues, the pressure value can be displayed on the numerical display 12 in real time, when the numerical display 12 has the pressure value suitable for cutting anastomosis, the closing is stopped, and then the firing handle 20 is pressed to complete the firing action.

The limiting mechanism is arranged at the rear end of the anastomat body 1 and comprises a limiting block 13 hinged to the anastomat body 1 and an elastic resetting piece 14 for driving the upper portion of the limiting block 13 to be buckled and pressed towards the front side, a row of vertically distributed ratchets 13-1 are arranged on the front side face of the upper portion of the limiting block 13, a clamping hook portion is arranged at the upper end of the locking handle 5, and a barb 5-1 in limiting fit with the ratchets 13-1 is arranged on the clamping hook portion.

The pressure detection unit is provided on the hook portion of the lock handle 5.

The lower part of the limiting block 13 is provided with a reset button 15 extending to the outer side of the rear end of the anastomat body 1, and the elastic reset piece 14 is arranged between the reset button 15 and the rear end of the anastomat body 1.

The multistage pressure control system formed by the locking handle, the barb, the limiting block, the ratchet and the elastic resetting piece can enable the nail abutting seat 3 and the nail bin assembly 4 to be positioned to a pressure value suitable for triggering anastomotic tissue. If the tissue cannot be closed (i.e., the closing pressure value exceeds the firing range), the reset button 15 can be pressed to unlock the limiting structures of the barbs and the ratchets and clamp the tissue again to a proper pressure value.

Postoperative patient's information can be transmitted the assigned position through data transmission module, especially conveys enterprise's cloud platform, and enterprise's cloud platform carries out statistical analysis to later stage data, constantly optimizes pressure numerical value and provides the doctor, has the significance to surgical operation scientific research.

The continuous perfection of data is passed through in the later stage, can design intelligent anastomat, as long as reach the pressure value, the anastomat is automatic to be aroused and accomplish the operation.

The elastic reset piece 14 is a spring, and a limiting groove for mounting the spring is formed in the rear end of the anastomat body 1.

The pressure detecting unit includes a pressure strain gauge 10 and a PCB board 11.

The utility model discloses the theory of operation as follows:

when the linear cutting anastomat is used for surgery, the nail abutting seat 3 and the nail bin assembly 4 of the anastomat are in an open state, and a multistage pressure control system formed by the locking handle 5, the barb 5-1, the limiting block 13, the ratchet 13-1 and the elastic resetting piece 14 pushes the closing connecting rod 6 to move forwards and close the nail abutting seat 3 and the nail bin assembly 4 simultaneously in the closing process;

the resistance force when the closing connecting rod 6 moves forwards causes the closing connecting rod 6 to deform, the pressure strain gauge 10 attached to the closing connecting rod 6 conducts the deformation to the PCB 11, and meanwhile, the pressure values of the tissue of the nail abutting seat 3 and the nail bin assembly 4 are displayed on the numerical display 12 in real time through the conversion of digital signals.

When the appropriate pressure value appears on the value display 12, the closure of the closure handle 5 is stopped.

Under the same pressure, the thicker the tissue is, the larger the gap between the nail bin assembly and the nail abutting seat is; conversely, the thinner the tissue is, the smaller the gap between the staple cartridge assembly and the staple abutting seat is. The tissue is compressed to a proper range through the locking handle capable of being regulated and controlled in multiple stages, so that the closed staples with uniform height can reach different closing heights (such as 1.0, 1.5, 1.8 and 2.0 mm) to meet the requirements of closing with different tissue thicknesses.

Claims

1. A linear cutting stapler with pressure sensing, comprising a stapler body (1), a staple cartridge splint (2), an anvil seat (3), a staple cartridge assembly (4), a clamping actuating assembly and a firing an operating assembly; the clamping operating assembly includes a locking handle (5), a closing link (6), a rotating fixing block (21), an outer sleeve (8) and a connecting pipe (9), the locking handle (5) Hinged on the stapler body (1), the connecting pipe (9), the outer sleeve (8) and the rotating fixing block (21) are connected in sequence from front to back, and the closing link (6) is connected to the locking Between the handle (5) and the rotating fixing block (21), it is characterized in that: it also includes a sensing mechanism for sensing the clamping force between the clamp plate (2) and the nail anvil (3) and a handle for controlling the locking (5) The limit mechanism that increases step by step according to the pressure;

The sensing mechanism comprises a pressure detection unit and a numerical display (12), the pressure detection unit is arranged on the locking handle (5), the closing link (6), the rotating fixing block (21), the outer sleeve (8) or the connection On the pipe (9), the signal connection between the pressure detection unit and the numerical display (12).

2. The linear cutting stapler with pressure sensing according to claim 1, characterized in that: the limiting mechanism is arranged at the rear end of the stapler body (1), which comprises hinged on the stapler body (1) The limit block (13) and the elastic reset member (14) that drives the upper part of the limit block (13) to buckle the front side, the upper front side of the limit block (13) is provided with a row of vertically distributed ratchet teeth (14). 13-1), the upper end of the locking handle (5) is provided with a hook portion, and the hook portion is provided with a barb (5-1) which is limited and matched with the ratchet teeth (13-1).

3. The linear cutting stapler with pressure sensing according to claim 2, characterized in that: the lower part of the limiting block (13) is provided with a reset button (15) extending to the outer side of the rear end of the stapler body (1). ), the elastic reset member (14) is arranged between the reset button (15) and the rear end of the stapler body (1).

4 . The linear cutting stapler with pressure sensing according to claim 2 , wherein the pressure detection unit is arranged on the hook portion of the locking handle ( 5 ). 5 .

5 . The linear cutting stapler with pressure sensing according to claim 3 , wherein the elastic restoring member ( 14 ) is a spring, and the rear end of the stapler body ( 1 ) is provided with a limiter for installing the spring. 6 . bit slot.

6. The linear cutting stapler with pressure sensing according to any one of claims 1-5, wherein the pressure detection unit comprises a pressure strain gauge (10) and a PCB board (11).