CN113303861A

CN113303861A - Blood vessel ligation device

Info

Publication number: CN113303861A
Application number: CN202110592442.XA
Authority: CN
Inventors: 王斌锐; 李哲勇; 李�瑞; 郭振武; 金英连
Original assignee: China Jiliang University
Current assignee: China Jiliang University
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-08-27
Anticipated expiration: 2041-05-28
Also published as: CN113303861B

Abstract

The invention discloses a clamp type blood vessel ligation device. The blood vessel ligation device comprises a clamp, a spring, a wrench and a seal, wherein the tail end of the spring is pressed to fix a ligation thread at two ends of the clamp and on a thread hooking needle, the ligation thread is surrounded and fixed on a blood vessel through the wrench and a seal block by means of the thread hooking needle, and the blood vessel is ligated to block the blood vessel. The blood vessel ligation device has a simple and compact structure and reliable movement by adopting a mode that the cam mechanism is adopted to move the crochet hook. The stroke of the wrench is limited by the clamp sliding groove of the cam mechanism, so that the clamp can accurately grab the blood vessel, and the blood vessel ligation efficiency is improved.

Description

Blood vessel ligation device

Technical Field

The invention relates to a clamp type blood vessel ligation device which is applied to ligation of tubular tissues such as blood vessels in vivo and blocking of thick blood vessels before tumor resection and has the functions of stopping bleeding and blocking.

Background

Hemostasis and ligation are basic techniques of surgery and are indispensable parts of the surgery, the quality of the surgery is directly influenced by the mastered quality of the techniques, and with the continuous development of scientific techniques, new technology and new equipment provide many modern means for hemostasis by surgery, such as ligation hemostasis, suture hemostasis, electrocoagulation hemostasis and the like. Ligation hemostasis is a commonly used method of hemostasis, with hemostatic forceps held accurately in line with the bleeding site, then ligated and sutured with appropriate silk. Aiming at the background that people need to block blood vessels in the deep tissue in the operation and the manual operation is difficult, the blood vessel ligation device is provided.

Disclosure of Invention

The invention aims to solve the technical problem that a blood vessel ligation device is used for ligating a blood vessel of a human body under the condition that the blood vessel at the deep tissue part needs to be blocked in an operation.

The blood vessel coarctation device comprises a clamp device, a cam mechanism, a wrench, a crochet needle device, a driving rod and a button, wherein the clamp device is positioned at the front end of the device and is used for coapting a blood vessel; the clamp device is connected with a cam mechanism in the device shell, the cam mechanism comprises a clamp sliding groove and a pressing block, the clamp sliding groove is matched with the clamp device, and the pressing block is used for pressing a non-return elastic sheet in the crochet hook device so that the crochet hook device retracts into the device shell; the cam mechanism is connected with the wrench sliding groove through a connecting piece, the wrench sliding groove is moved forwards by buckling the wrench, so that the pressing block is pushed to press the non-return elastic sheet, and meanwhile, the clamp device is in a tightening state along the guide of the clamp sliding groove;

the wire hooking needle device is positioned in the device shell, a wire clamp wire hooking needle of the wire hooking needle device extends out of the device shell and is positioned at the central shaft of the clamp device, the wire clamp wire hooking needle is connected with a button at the tail end of the device through a driving rod, a spring device is arranged in the button and used for pulling back the wire clamp wire hooking needle, and the driving rod is provided with a clamping groove and matched with the non-return elastic piece and used for fixing the relative position of the wire hooking needle device;

the clamp device comprises an upper clamp body and a lower clamp body, wherein a sealing block is arranged on the upper clamp body, and a clamp guide groove is formed in the position of the corresponding lower clamp body.

Further, the clamp device comprises a return spring, and the return spring enables the clamp device to return to an open state after the spanner is loosened.

Further, the clamp device further comprises a rotating wheel mechanism, and the rotating wheel mechanism is used for adjusting the opening direction of the clamp device.

Furthermore, the wire clamp hooking needle comprises a wire clamp and a hooking needle which are connected together, and when the clamp device is in an opening state, the ligature rope returns to the upper clamp body after passing through the upper clamp body, the wire clamp, the lower clamp body and the hooking needle in sequence; the wire clamp and the crochet hook are respectively used for fixing and controlling the ligature rope.

Furthermore, the sealing block is composed of a wire inlet and a sealing edge.

The invention has the beneficial effects that:

1. the blood vessel ligation device has simple and compact structure and reliable motion by adopting a mode of moving the crochet hook by the cam mechanism.

2. The stroke of the wrench is limited by the clamp sliding groove of the cam mechanism, so that the clamp can accurately grab the blood vessel, and the blood vessel ligation efficiency is improved.

3. The stability of grasping and ligating the blood vessel can be improved by adopting a mode of grasping the blood vessel by the clamp device.

4. The clamp is reset by the clamp reset spring, so that the simplicity of the device is improved.

Drawings

The invention will be further described with reference to the accompanying drawings in which:

fig. 1 is a sectional view of a blood vessel ligation device according to the present invention;

fig. 2 is a view showing the construction of a clip device for a blood vessel ligation device according to the present invention;

FIG. 3a is a structural view of a wire hooking needle of the wire clamp of the present invention;

FIG. 3b is a view of the drive rod configuration of the present invention;

FIG. 4 is a view of the check device of the hook needle of the blood vessel ligation device according to the present invention;

FIG. 5a is a cam mechanism diagram of the blood vessel ligation device according to the present invention;

FIG. 5b is a view of the clip assembly of the present invention in cooperation with a cam mechanism;

fig. 6 is a view of a block module of the blood vessel ligation device according to the present invention;

fig. 7 is a view illustrating a blood vessel ligation device according to the present invention fixing a ligation cord;

fig. 8 is a structural view of the rotary wheel of the blood vessel ligation device according to the present invention;

fig. 9 is a view of the check spring plate driven by the pressure block of the blood vessel ligation device in the invention;

fig. 10 is a view showing the construction of the blood vessel ligation device according to the present invention.

Detailed Description

The invention comprises a clamp device, a cam mechanism, a wrench, a crochet needle device, a driving rod and a button.

The clamp device is positioned at the front end of the device and is used for enclosing a blood vessel; the clamp device is connected with a cam mechanism in the device shell, the cam mechanism comprises a clamp sliding groove and a pressing block, the clamp sliding groove is matched with the clamp device, and the pressing block is used for pressing a non-return elastic sheet in the crochet hook device so that the crochet hook device retracts into the device shell; the cam mechanism is connected with the wrench sliding groove through a connecting piece, the wrench sliding groove is moved forwards by buckling the wrench, so that the pressing block is pushed to press the non-return elastic sheet, and meanwhile, the clamp device is in a tightening state along the guide of the clamp sliding groove; the position mode of the hook needle device is controlled by combining the clamping groove and the non-return elastic sheet, so that the accuracy of position control can be improved. The mode of grabbing the blood vessel by the clamp device can improve the stability of grabbing and ligating the blood vessel. The blood vessel ligation device has simple and compact structure and reliable motion by adopting a mode of moving the crochet hook by the cam mechanism.

The wire hooking needle device is positioned in the device shell, a wire clamp wire hooking needle of the wire hooking needle device extends out of the device shell and is positioned at the central shaft of the clamp device, the wire clamp wire hooking needle is connected with a button at the tail end of the device through a driving rod, a spring device is arranged in the button and used for pulling back the wire clamp wire hooking needle, and the driving rod is provided with a clamping groove and matched with the non-return elastic piece and used for fixing the relative position of the wire hooking needle device; the mode that the spring device is used for controlling the extension and retraction of the crochet hook can more simply achieve the reset function. The wire clamp hooking needle comprises a wire clamp and a hooking needle which are connected together, and when the clamp device is in an opening state, the ligature rope returns to the upper clamp body after passing through the upper clamp body, the wire clamp, the lower clamp body and the hooking needle in sequence; the wire clamp and the crochet hook are respectively used for fixing and controlling the ligature rope.

The spanner drives the cam mechanism to unlock the non-return elastic sheet through the cam mechanism, so that the spring device drives and changes the position of the thread hooking needle device, and then the ligature rope is tightened to block blood vessels.

The clamp device comprises an upper clamp body and a lower clamp body, wherein a sealing block is arranged on the upper clamp body, a clamp guide groove is arranged at the position corresponding to the lower clamp body, and the sealing block consists of a wire inlet and a sealing edge; the sealing block is used for fixing the tying rope, so that the stability of fixing the tying rope can be improved.

The invention is also provided with a return spring, and the return spring enables the clamp device to be restored to an open state after the wrench is loosened. The clamp is reset by the clamp reset spring, so that the simplicity of the device is improved.

The invention is also provided with a rotating wheel mechanism which is used for adjusting the opening direction of the clamp device. The clamp device is used for grabbing the blood vessel through opening and closing and matching with the rotating wheel mechanism, and after grabbing, the ligation rope is matched to tighten and the sealing block is deformed and compressed to finish ligation of the blood vessel. The direction of the rotating wheel mechanism rotating clamp device and the direction of the thread hooking needle are adopted, so that the flexibility of the device can be improved.

The blood vessel ligation device comprises a clamp, a spring, a wrench and a seal, wherein the tail end of the spring is pressed to fix a ligation thread at two ends of the clamp and on a thread hooking needle, the ligation thread is surrounded and fixed on a blood vessel through the wrench and a seal block by means of the thread hooking needle, and the blood vessel is ligated to block the blood vessel.

Example (b):

as shown in fig. 1, the present embodiment includes a clamping device 1, a cam mechanism 2, a check spring 3, a return spring 4, a crochet needle device 5, a wrench 6, a rotating wheel device 7, a wrench sliding groove 8, a spring device 9, and a button 10.

As shown in fig. 2, a seal block 101 is fixed to an upper clip body 103, a clip device 1 is fixed to an outer tube body of the device, and a lower clip body 104 is provided with a clip guide groove 102.

As shown in fig. 3a and 3b, the crochet needle device 5 comprises a wire clip crochet needle 501, a driving rod 502 and a plug pin hole 503; the wire clamp hooking needle 501 comprises a hooking needle 5011 and a wire clamp 5012, the wire clamp hooking needle driving rod 502 comprises a clamping groove 5021, and the wire clamp hooking needle 501 is connected with the driving rod 502. The crochet needle device 5 is moved forward (left direction in the figure) by pressing a button 10 connected to the end of the spring device 9.

As shown in fig. 4, in the process of moving the hook needle device 5 forward, the catching groove 5021 is engaged with the anti-return spring 3, and the hook needle device 5 is fixed at a designated position by pressing the button 10.

As shown in fig. 5a, the cam mechanism 2 includes a clip slide groove 201 and a pressing piece 202. As shown in fig. 5b, a pin shaft at the end of the clip body is arranged in the clip sliding groove 201, and the pin shaft drives the corresponding clip body to move under the guiding action of the clip sliding groove 201, so as to form a state that the upper and lower clip bodies are opened and closed, further, the clip sliding groove 201 is designed according to a predetermined track, and three actions of pre-clamping, waiting for the crochet needle to be retracted, and clamping of the clip device are realized.

As shown in fig. 6, the sealing block 101 includes an edge 1011 to be sealed when the edge is not sealed, an upper inlet 1012, and an edge 1013 to be sealed is transformed from the edge 1011 to be sealed after the edge is sealed.

As shown in fig. 7, the tying string is formed in a loop shape, and one side thereof is inserted through the upper thread inlet 1012 of the seal block 101 and the other side thereof is fixed to the clip guide groove 102. Pressing the button 10, the crochet hook device 5 extends, and the two sides of the ligature rope are respectively placed in the crochet hook 5011 and the wire clip 5012.

As shown in fig. 8, the turning wheel device 7 includes a turning wheel shifting piece 701, a first bearing 702 and a second bearing 703, because the outer ring of the turning wheel device 7 is relatively fixed with the device housing, the thread hooking needle device 5 is relatively fixed with the device housing through the bolt hole 503, and the inner ring of the turning wheel device 7 is connected with the outer ring of the turning wheel device 7 through the first bearing 702 and the second bearing 703, the turning wheel shifting piece 701 can adjust the opening directions of the clamp device 1 and the thread hooking needle 501 under the action of the first bearing 702 and the second bearing 703. The poking wheel poking sheet 701 adjusts the opening direction of the clamp device 1 under the action of the first bearing 702 and the second bearing 703, so that the blood vessel can be grasped more flexibly.

The working process of the device is as follows: when a blood vessel is placed at a position inside the jaw of the clamp device 1, the wrench 6 is pulled, and the pressing piece 202 is moved forward by the wrench slide groove 8 and the cam mechanism 2. As shown in fig. 9, the pressing block 202 presses the check spring 3 downward in the process of moving in the forward direction, so that the check spring 3 is separated from the catching groove 5021, the hook needle device 5 moves backward under the pulling force of the spring device 9, and the clip device 1 is gradually closed by buckling the wrench 6. Since the crochet hook 5011 fixes one side of the ligature line, the other side of the ligature line clamped in the wire clamp 5012 is gradually separated from the wire clamp 5012 due to the tensile force since the length of the ligature line is constant during the backward movement of the crochet hook device 5.

In the process of gradually and completely closing the clamp device 1, the sealing block 101 fixed on the upper clamp body 103 is pressed in along the clamp guide groove 102 under the action of the upper clamp body and the lower clamp body pressure, and as the sealing block 101 is made of titanium alloy material, the edge 1011 to be sealed of the sealing block deforms to form a sealed structure sealed edge 1013 when being pressed in the clamp guide groove 102 similar to a W shape, so that the ligature rope fixed on the part of the clamp guide groove 102 is also fixed in the sealing block 101. The ligature rope separated from the wire clamp 5012 and the sealing block 101 surround the blood vessel together, and the ligature rope in the surrounding area is further tightened due to the fact that the wire hooking needle device 5 moves backwards, so that the purpose of ligature of the blood vessel is achieved. After the vessel is grabbed, the wrench 6 is loosened, and the clamp device 1 is restored to the opened state under the action of the return spring 4. After the blood vessel ligation is completed, the blood vessel ligation device is moved backward to tear the ligation rope by the crochet needle 5011, thereby completing the operation. Fig. 10 shows a structural view of the blood vessel ligation device.

Other embodiments of the present invention than the preferred embodiments described above will be apparent to those skilled in the art from the present invention, and various changes and modifications can be made therein without departing from the spirit of the present invention as defined in the appended claims.

Claims

1. Blood vessel ligation device, including clip device, cam mechanism, spanner, crochet hook needle device, actuating lever and button, its characterized in that:

the clamp device is positioned at the front end of the device and is used for enclosing a blood vessel; the clamp device is connected with a cam mechanism in the device shell, the cam mechanism comprises a clamp sliding groove and a pressing block, the clamp sliding groove is matched with the clamp device, and the pressing block is used for pressing a non-return elastic sheet in the crochet hook device so that the crochet hook device retracts into the device shell; the cam mechanism is connected with the wrench sliding groove through a connecting piece, the wrench sliding groove is moved forwards by buckling the wrench, so that the pressing block is pushed to press the non-return elastic sheet, and meanwhile, the clamp device is in a tightening state along the guide of the clamp sliding groove;

2. The blood vessel ligation device according to claim 1 further comprising a return spring which returns the clip device to the open position upon release of the wrench.

3. The blood vessel ligation device according to claim 1 further comprising a rotating wheel mechanism for adjusting the opening direction of the clamp device.

4. The blood vessel ligation device according to claim 1, wherein the wire clamp hooking needle comprises a wire clamp and a hooking needle which are connected together, and when the clamp device is in an open state, the ligation rope returns to the upper clamp body after passing through the upper clamp body, the wire clamp, the lower clamp body and the hooking needle in sequence; the wire clamp and the crochet hook are respectively used for fixing and controlling the ligature rope.

5. The blood vessel ligation device according to claim 1, wherein the sealing block is formed by a thread inlet and a sealing edge.