CN114403956A

CN114403956A - Heart tissue retractor

Info

Publication number: CN114403956A
Application number: CN202210222358.3A
Authority: CN
Inventors: 厉泉; 曲虹; 孙宗国; 李红昕; 于建民; 王恒宝; 李培杰; 许莉
Original assignee: Shandong Qianfoshan Hospital
Current assignee: Shandong Qianfoshan Hospital
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-04-29
Anticipated expiration: 2042-03-07
Also published as: CN114403956B

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a cardiac tissue retractor which comprises a nondestructive clamp, a fixing clamp and a traction rope, wherein the proximal end of the nondestructive clamp is used for clamping tissues at a cardiac incision; the nondestructive clamp comprises an upper clamp body with an upper clamping part and a lower clamp body with a lower clamping part, wherein the upper clamping part and the lower clamping part are arc-shaped plates and are matched with each other, and the upper clamping part and the lower clamping part are inclined towards one side of the lower clamp body; the invention can change the traction force and the traction direction of the tissue at the heart incision by adjusting the positions of the jaws of the atraumatic clamp and the fixing clamp, the position adjustment is convenient and quick, and meanwhile, the tissue can be prevented from being damaged.

Description

Heart tissue retractor

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a cardiac tissue retractor.

Background

In cardiac surgery, it is necessary to expose aortic valve, left ventricular outflow tract, or left atrial inner structure (such as left atrial appendage, mitral valve, etc.), or right atrial inner structure (such as atrial septum, tricuspid valve, etc.), or pulmonary valve, right ventricular outflow tract, etc. through various incisions.

In the traditional method, a traction wire is sewn to draw an incision so that an operator can clearly see the internal structure, and then the next operation is carried out. However, the method for suturing the traction wire needs to suture a plurality of suture lines on the heart tissue, which is easy to cause heart tissue damage, and in addition, the traction direction and the traction force of the traction wire need to be adjusted at any time to be better exposed along with the progress of the operation, so the traction wire needs to be removed and the traction position needs to be adjusted to suture the traction wire again, which delays the operation time.

Disclosure of Invention

The invention aims to provide a cardiac tissue retractor, which aims to solve the problems that the suture traction line in the prior art is easy to cause tissue damage, and the traction direction and the traction force cannot be adjusted in time.

In order to achieve the above object, the present invention is achieved by the following technical solutions:

the invention provides a cardiac tissue retractor, which comprises a no-damage clamp, a fixing clamp and a traction rope, wherein the near end of the no-damage clamp is used for clamping tissues at a cardiac incision, the fixing clamp is arranged at the far end of the no-damage clamp, and the traction rope is used for connecting the fixing clamp and the fixing clamp;

the nondestructive clamp comprises an upper clamp body with an upper clamping part and a lower clamp body with a lower clamping part, wherein the upper clamping part and the lower clamping part are arc-shaped plates and are matched with each other, and the upper clamping part and the lower clamping part are inclined to one side of the lower clamp body.

As a further technical scheme, the traction rope is hinged with the damage-free clamp and the fixing clamp respectively.

As a further technical scheme, the matching surfaces of the upper clamping part and the lower clamping part are provided with staggered bulges.

According to a further technical scheme, the length of the pressing end of the lower clamp body is larger than that of the pressing end of the upper clamp body, the pressing end of the upper clamp body is hinged with a first blocking piece, and an opening between the upper clamp body and the lower clamp body is sealed by rotating to one side of the lower clamp body through the first blocking piece.

According to a further technical scheme, the fixing clamp comprises an upper fixing clamp body and a lower fixing clamp body, a pressing end of the upper fixing clamp body is hinged to a second blocking piece, the second blocking piece rotates to one side of the lower fixing clamp body to seal an opening between the upper fixing clamp body and the lower fixing clamp body, and an obtuse angle is formed between the first blocking piece and the upper fixing clamp body when the opening is sealed.

As a further technical scheme, the traction rope is hinged with the lower clamp body and the lower clamp body of the fixing clamp respectively.

As a further technical scheme, T-shaped shafts are arranged at two ends of the traction rope and are hinged with the lower clamp body and the lower clamp body of the fixing clamp through the T-shaped shafts.

As a further technical scheme, the end part of the pressing end of the lower clamp body of the fixing clamp is provided with a bending blocking part and a rotating shaft installation part connected with the bending blocking part, a gap for clamping the second blocking piece is formed between the bending blocking part and the rotating shaft installation part, and the second blocking piece rotates, extrudes and crosses the rotating shaft installation part to enter the gap for clamping.

As a further technical scheme, the lower clamp pressing end is provided with a rotating shaft installation part, and the first blocking piece rotates, extrudes and crosses the rotating shaft installation part and the lower clamp in a contact mode to form clamping.

As a further technical scheme, the generatrix direction of the arc-shaped plate is consistent with the inclination direction of the arc-shaped plate.

The beneficial effects of the invention are as follows:

(1) the heart incision tissue fixing device is provided with the nondestructive clamp and the fixing clamp which are connected through the traction rope, the traction force and the traction direction of the heart incision tissue can be changed by adjusting the positions of the clamp jaws of the nondestructive clamp and the fixing clamp, the position adjustment is convenient and quick, the internal structure of the heart can be fully exposed, and the subsequent operation of an operator is facilitated.

(2) The upper clamping part and the lower clamping part are arc-shaped plates and are matched with each other, and the arc-shaped plate clamping parts can be matched with cardiac incision tissues and have large contact area, so that the damage to the cardiac tissues can be avoided.

(3) According to the invention, the pressing end of the upper clamp body is hinged with the first blocking piece, the opening between the upper clamp body and the lower clamp body is closed by rotating the first blocking piece to one side of the lower clamp body, so that a suture line is prevented from entering the opening during the suture operation, meanwhile, the suture line can be quickly slid away, the suture line is not wound with a nondestructive clamp, and the precious operation time waste is reduced; and because the first blocking piece is hinged with the upper clamp body, the position of controlling the opening and closing of the clamping end can be rotated to a position which does not influence the opening and closing of the clamping end before the clamping is not clamped by the nondestructive clamp.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the invention and not to limit the invention. It will be further appreciated that the drawings are for simplicity and clarity and have not necessarily been drawn to scale. The invention will now be described and explained with additional specificity and detail through the use of the accompanying drawings in which:

FIG. 1 shows a schematic of the overall structure of the present invention;

FIG. 2 is a front view showing the construction of the atraumatic clip of the present invention;

FIG. 3 is a perspective view of the atraumatic clip lower body of the present invention;

FIG. 4 shows a front view of the retaining clip structure of the present invention;

fig. 5 shows a partial enlarged view at a in fig. 4.

In the figure: 1. a non-traumatic clamp; 11. an upper clamp body; 12. a lower clamp body; 13. an upper clamping portion; 14. a lower clamping portion; 15. a first baffle plate; 16. a first torsion spring; 17. a first T-shaped rotating shaft; 18. a protrusion; 2. a fixing clip; 21. the clamp body is arranged on the fixing clamp; 22. a lower clamp body of the fixing clamp; 23. a second baffle plate; 24. a second T-shaped rotating shaft; 25. a second torsion spring; 26. a rotating shaft mounting part; 27. bending the blocking part; 3. and (6) pulling the rope.

Detailed Description

The technical solutions in the exemplary embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1, the present embodiment provides a cardiac tissue retractor, which includes an atraumatic clip 1 at a proximal end for clamping tissue at a cardiac incision, a fixation clip 2 at a distal end, and a traction rope 3 connecting the two, wherein the traction force and the traction direction of the tissue at the cardiac incision are changed by adjusting the clamping position of the fixation clip 2 and/or the atraumatic clip 1;

the atraumatic clip 1 includes an upper clip body 11 having an upper clamping portion 13 and a lower clip body 12 having a lower clamping portion 14, wherein the upper clamping portion 13 and the lower clamping portion 14 are both arc-shaped plates and are mutually matched, and both are inclined to one side of the lower clip body 12, as shown in fig. 2.

It should be noted that at least two cardiac tissue retractors of the present invention are used in cooperation, and the position of the cardiac tissue retractor is arranged according to the needs of the operator, so as to fully expose the internal structure of the heart, thereby facilitating the operation of the operator.

The nondestructive clamp 1 and the fixing clamp 2 which are connected through the traction rope 3 are arranged, the traction force and the traction direction of the tissue at the heart incision can be changed by adjusting the positions of the jaws of the nondestructive clamp 1 and the fixing clamp 2, the position adjustment is convenient and quick, the internal structure of the heart can be fully exposed, and the subsequent operation of an operator is convenient; simultaneously, the arc-shaped plate clamping part of the nondestructive clamp 1 can be matched with the cardiac incision tissue, the contact surface is large, and the damage to the tissue can be avoided.

The upper clamping part 13 and the lower clamping part 14 are arranged to incline towards one side of the lower clamp body 12, so that the outward drawing of the nondestructive clamp 1 is facilitated, and the internal structure of the heart is convenient to expose. Typically, the included angle of inclination is in the range of 30 ° to 90 °.

It will be understood that the generatrix of the arc-shaped plate should be oriented in line with the direction in which it is inclined.

When the heart-free heart-shaped safe clip is used, after the damage-free clip 1 is clamped, the heart is located inside a body, the fixing clip 2 needs to be led out through the traction rope 3 because the heart is not provided with a fixed part inside, and the fixing clip 2 can be fixed on a single towel or other articles capable of playing a role in fixing and supporting. In order to facilitate later-stage sterilization and reuse, the nondestructive clamp and the fixing clamp can be made of stainless steel materials, and the traction rope can be made of soft steel wires, so that sterilization is facilitated.

The clamping end of the fixing clip 2 can be provided with a rubber block or teeth to increase the friction force with a single towel or other supports.

Generally, a clamp has an upper clamp body and a lower clamp body, and is hinged at the middle position, the clamping force is kept through a spring, one end of the clamp for clamping an article is a clamping end, and the other end for controlling the opening and closing of the clamping end is a pressing end.

In this embodiment, as shown in fig. 2, the atraumatic clamp 1 includes an upper clamp 11 and a lower clamp 12, which are hinged at the middle and maintain the clamping force by a first torsion spring 16; as shown in fig. 4, the fixing clip includes a fixing clip upper body 21 and a fixing clip lower body 22, which are hinged at the middle portion and maintain a clamping force by a second torsion spring 25.

Because the clamp is provided with the opening between the upper clamp body and the lower clamp body at the pressing end in order to control the opening and closing of the clamping end, the suture line is easy to enter the opening during threading in the suturing process due to small operation space, the suture line can be wound with the clamp, and then the suture line is threaded again after the suture line is unwound or cut short, thereby wasting valuable operation time.

Therefore, the pressing end of the upper clamp body 11 is hinged with the first blocking piece 15, the opening between the upper clamp body 11 and the lower clamp body 12 is closed by rotating the first blocking piece 15 to one side of the lower clamp body 12, the suture line is prevented from entering the opening, and the waste of operation time is reduced. It will be appreciated that before the unsecured position of the clip, the first blocking piece 15 is rotated to a position where it does not interfere with the opening and closing of the pressing end, for example, to the upper surface of the upper clip body 11, and after the secured position, the first blocking piece is rotated to the lower clip body 12 to close the opening. The length of the pressing end of the lower clamp body 12 is greater than that of the pressing end of the upper clamp body 11, an obtuse angle is formed between the first blocking piece 15 and the upper clamp body 11 when the opening is closed, the optimal angle is 120 degrees, when the suture line touches the first blocking piece 15, the suture line is rapidly guided to slide away from the upper surface of the suture line, and the suture line is prevented from being wound.

Of course, the same situation may be encountered with a fixing clip outside the body, and therefore, as shown in fig. 4, the pressing end of the fixing clip upper clip body 21 is hinged with the second blocking piece 23, and the opening between the fixing clip upper clip body 21 and the fixing clip lower clip body 22 is closed by rotating to the fixing clip lower clip body 22 side through the second blocking piece 23.

In order to avoid the blocking piece from moving after being closed and affecting the effect, in this embodiment, as shown in fig. 5, a bending blocking portion 27 and a rotating shaft mounting portion 26 connected to the bending blocking portion are disposed at the end of the pressing end of the lower clamp body 22 of the fixing clamp, a gap for engaging the second blocking piece 23 is disposed between the bending blocking portion and the rotating shaft mounting portion, and the second blocking piece 23 rotates, extrudes, crosses the rotating shaft mounting portion 26, and enters the gap for engaging.

In this embodiment, the rotating shaft mounting portion 26 is a sleeve structure, and there is a certain obstacle when the second stopper 23 rotates to the rotating shaft mounting portion 26, and the second stopper 23 can pass over and enter the gap of the engagement by being stirred by a hand with a slight force, so that the second stopper 23 cannot move. It is understood that the minimum distance between the bending stop portion 27 and the shaft mounting portion 26 and the rotation center of the second blocking piece 23 is slightly smaller than the turning radius of the end of the second blocking piece 23.

The pressing end of the lower clamp body 12 is only provided with a rotating shaft mounting part 26, and the first blocking sheet 15 rotates and presses to pass through the rotating shaft mounting part 26 to be in contact with the lower clamp body 12 to form clamping.

Note that the bending stopper 27 is used to mount the second torsion spring 25.

The haulage rope 3 is articulated with not damaged clamp 1 and fixation clamp 2 respectively, increases haulage rope 3 and not damaged clamp 1 and fixation clamp 2's connection flexibility, guarantees that the tractive atress is gentle and agreeable.

Specifically, the traction rope 3 is hinged with the lower clamp body 12 and the lower clamp body 22 of the fixing clamp respectively. Two ends of the traction rope 3 are provided with T-shaped shafts which are hinged with the lower clamp body 12 and the lower clamp body 22 of the fixing clamp. In this embodiment, one end of the pulling rope 3 is hinged to the lower clamp body 12 through the first T-shaped rotating shaft 17, and the other end is hinged to the lower clamp body 22 through the second T-shaped rotating shaft 24, that is, hinged to the rotating shaft mounting portion 26.

In this embodiment, as shown in fig. 3, the matching surfaces of the upper clamping portion 13 and the lower clamping portion 14 are provided with staggered protrusions 18, which is beneficial to increase the friction force with the cardiac incision tissue and prevent slippage during clamping and influence on the operation.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.

Claims

1. A cardiac tissue retractor is characterized by comprising an atraumatic clip with a proximal end used for clamping tissues at a cardiac incision, a fixing clip with a distal end and a traction rope for connecting the atraumatic clip and the fixing clip, wherein the traction force and the traction direction of the tissues at the cardiac incision are changed by adjusting the clamping position of the fixing clip and/or the atraumatic clip;

2. The cardiac tissue retractor of claim 1, wherein said pull cord is hingedly attached to said atraumatic clip and said fixation clip, respectively.

3. The cardiac tissue retractor according to claim 1, wherein the mating surfaces of said upper clip portion and said lower clip portion are provided with staggered protrusions.

4. The cardiac tissue retractor according to claim 2, wherein the length of the pressing end of the lower clip body is greater than that of the pressing end of the upper clip body, the pressing end of the upper clip body is hinged with a first blocking piece, the opening between the upper clip body and the lower clip body is closed by rotating the first blocking piece to one side of the lower clip body, and when the opening is closed, the first blocking piece and the upper clip body form an obtuse angle.

5. The cardiac tissue retractor according to claim 4, wherein the fixing clip comprises an upper fixing clip body and a lower fixing clip body, the pressing end of the upper fixing clip body is hinged with a second blocking piece, and the opening between the upper fixing clip body and the lower fixing clip body is closed by the second blocking piece rotating to one side of the lower fixing clip body.

6. The cardiac tissue retractor of claim 5, wherein said pull cord is hingedly connected to said lower clamp body and said lower clamp body of said fixation clamp, respectively.

7. The cardiac tissue retractor according to claim 6, wherein the pulling rope has a T-shaped shaft at both ends, and the T-shaped shaft is hinged to the lower clamp body and the lower clamp body of the fixing clamp.

8. The cardiac tissue retractor according to claim 5, wherein the end of the pressing end of the lower clip body of the fixation clip is provided with a bent blocking portion and a rotating shaft mounting portion connected with the bent blocking portion, a gap for clamping the second blocking piece is arranged between the bent blocking portion and the rotating shaft mounting portion, and the second blocking piece is rotatably extruded to pass through the rotating shaft mounting portion and enter the gap for clamping.

9. The cardiac tissue retractor according to claim 4, wherein the pressing end of the lower clip body is provided with a pivot mounting portion, and the first blocking blade is rotated to press and contact with the lower clip body to form a clamping connection after passing through the pivot mounting portion.

10. A cardiac tissue retractor according to claim 1, wherein said arcuate plates have generatrix in the same direction as the direction in which they are inclined.