CN219680690U - Vascular stitching instrument - Google Patents

Abstract

The utility model discloses a vascular suture device, which comprises a control handle assembly, wherein one end of the control handle assembly is provided with a plunger push pin assembly in a sliding manner, the other end of the control handle assembly is provided with a suture catheter assembly, the suture catheter assembly comprises a guide rod part and a guide tube sleeved at the tail end of the guide rod part, the guide rod part is provided with a frustum fixing piece and a rotating piece used for fixing the frustum fixing piece on the guide rod part, and an acute angle formed between a generatrix of the frustum end of the frustum fixing piece and the axis of a straight line section of the guide rod part is 45 degrees. Through setting up the frustum mounting, can make vascular suture ware be 45 under natural state, need not the doctor to rely on experience or feel to confirm the angle between vascular suture ware and the blood vessel, make the needle bar can pass the passageway smoothly, reduced the operation risk because of doctor judges the deviation leads to, showing the success rate that has improved the operation.

Description

Vascular stitching instrument

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a vascular suturing device.

Background

Interventional procedures are the first treatment scheme for treating cardiovascular and cerebrovascular diseases such as hemangioma, vascular stenosis, acute myocardial infarction and the like in recent years. By virtue of the advantages of small wound, high efficiency and accurate and safe treatment, the traditional Chinese medicine composition has become a third largest clinical treatment means outside surgical and medical treatment. The intervention operation is not separated from vascular puncture, wherein the femoral artery puncture not only occupies the classical path of coronary intervention, but also occupies 90% of puncture paths in peripheral intervention operation. Hemostasis after femoral artery puncture has been a problem for clinicians. The traditional hemostatic method is hand-pressing hemostasis, the puncture point needs to be pressed by hands for a long time, and the patient needs to lie in bed for a long time after hemostasis. Not only is time and labor wasted for medical staff, but also inconvenience is caused to some patients who cannot lie flat for a long time. Therefore, vascular staplers have been developed to solve the hemostasis problem after interventional procedures.

However, when the existing vascular suture device is used, 45 degrees are required to be formed between the existing vascular suture device and a blood vessel, and when an operation is performed, a doctor is required to judge the angle between the vascular suture device and the blood vessel according to experience, deviation is easy to occur, so that the difficulty of vascular suture is increased, and even the success rate of the operation can be influenced. In addition, when the existing vascular suture device is used for suturing a large-caliber wound, a plurality of vascular suture devices are needed to be used for operation, and the vascular suture device is very inconvenient.

Disclosure of Invention

The utility model mainly aims to provide a vascular suture device, which aims to solve at least one technical problem.

In order to achieve the above object, the present utility model provides a vascular suture device, comprising a control handle assembly, wherein one end of the control handle assembly is slidably provided with a plunger push needle assembly, the other end of the control handle assembly is provided with a suture catheter assembly, the suture catheter assembly comprises a guide rod part and a guide tube sleeved at the tail end of the guide rod part, the guide rod part is provided with a frustum fixing piece and a rotating piece for fixing the frustum fixing piece on the guide rod part, and an acute angle formed between a generatrix of the frustum end of the frustum fixing piece and an axis of a straight line section of the guide rod part is 45 degrees.

The first through hole is formed in the axis of the frustum fixing piece in a penetrating mode, and therefore the frustum fixing piece can be sleeved on the guide rod portion.

The frustum fixing piece comprises a frustum end and a cylindrical end connected with the frustum end; the cylinder end is kept away from the one end of frustum end sets up to elasticity clamping jaw structure, elasticity clamping jaw structure can tighten up or loosen.

Wherein, the cylinder end is provided with external threads, and the rotating piece is provided with internal threads matched with the external threads; when the rotary piece is fastened with the cylindrical end through threads, the elastic clamping jaw structure is tightened, so that the elastic clamping jaw structure is tightly pressed and fixed on the guide rod part.

Wherein the plunger push needle assembly comprises a pushing part and a needle rod; the pushing part is arranged at one end of the control handle assembly in a sliding manner, one end of the needle bar is arranged on the pushing part, the other end of the needle bar penetrates through the control handle assembly and extends to the suture catheter assembly, and the needle bar moves under the driving of the pushing part.

The pushing part comprises a first pushing part, a second pushing part and a plunger rod, wherein an elongated slot is formed in the first pushing part, one end of the second pushing part is arranged in the elongated slot, the other end of the second pushing part penetrates through the elongated slot and then is arranged in the control handle assembly in a sliding mode, the plunger rod is arranged in the elongated slot in a sliding mode, and the plunger rod is used for pushing the needle rod.

The control handle assembly comprises a top shell and a bottom shell matched with the top shell, wherein the top shell and the bottom shell are respectively provided with a semi-cylindrical groove, and the two semi-cylindrical grooves are respectively provided with a cylindrical groove for installing a crank spanner.

The crank wrench is provided with a second through hole, and the crank wrench is driven to enable the second through hole to be coaxial or not coaxial with the second pushing part, so that the second pushing part can pass through or cannot pass through the second through hole.

Wherein, be provided with the reducing section on the second propulsion portion to be convenient for guide the second propulsion portion pass the second through-hole.

The control handle assembly further comprises a shaft rod sliding block and a U-shaped rod, the shaft rod sliding block is arranged in the bottom shell, one end of the U-shaped rod is detachably connected with the shaft rod sliding block, and the other end of the U-shaped rod is arranged on the crank spanner.

The positioning groove is internally provided with a stop protrusion for limiting the displacement of the U-shaped rod in the vertical direction.

The shaft slider is provided with a shaft support, and the shaft support is used for controlling the needle abutment seat of the suture catheter assembly so as to assist in achieving vascular suturing.

And an elastic piece is arranged between the shaft lever sliding block and the shaft lever supporting piece so as to increase the travel allowance of the shaft lever supporting piece relative to the shaft lever sliding block.

And a core rod used for guiding is arranged between the shaft rod support piece and the guide rod part, so that the guiding between the shaft rod support piece and the guide rod part is ensured in the installation and sliding process.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the frustum fixing piece is arranged, so that the vascular suture device is 45 degrees in a natural state, a doctor is not required to determine the angle between the vascular suture device and a blood vessel through experience or feeling, a needle rod can smoothly pass through a channel, the operation risk caused by judgment deviation of the doctor is reduced, and the success rate of operation is remarkably improved.

2. In actual use, the frustum fixing piece can be fixed at a preset position of the guide rod part according to actual requirements through the cooperation of the elastic clamping jaw structure and the rotating piece, so that the rapid positioning of the vascular suture device can be realized, and the vascular suture device is compact in structure and convenient to use.

3. According to the utility model, by independently controlling the crank spanner, the coaxiality between the plunger push needle assembly and the second through hole of the crank spanner can be changed, and the sliding of the shaft lever sliding block can be controlled through the U-shaped rod, so that the needle propping seat of the suture catheter assembly is controlled, and the vascular suture is assisted.

4. Compared with the prior art, when the large-caliber wound is stitched, the vascular stitching instrument only needs one vascular stitching instrument to operate, is very convenient, reduces operation time and learning curve, and reduces cost.

Drawings

FIG. 1 is a front view of a vascular stapler according to an embodiment of the present utility model;

FIG. 2 is a perspective view of the frustum mount of FIG. 1;

FIG. 3 is a front view of the plunger push pin assembly of FIG. 1;

FIG. 4 is a perspective view of the propulsion unit of FIG. 3;

FIG. 5 is an exploded view of the control handle assembly of FIG. 1;

FIG. 6 is a cross-sectional view of the crank wrench of FIG. 5 in engagement with the pusher portion;

FIG. 7 is an enlarged view of portion A of FIG. 5;

fig. 8 is an exploded view of the guide rod portion (including the core rod) of fig. 1.

The reference numerals in the figures illustrate:

control handle assembly 1, top housing 11, bottom housing 12, semi-cylindrical groove 13, crank wrench 14, second through hole 141, shaft slider 15, positioning groove 151, stop protrusion 152, U-shaped rod 16, shaft support 17, elastic member 18, core rod 19, plunger push pin assembly 2, push section 21, first push section 211, second push section 212, reducing section 2121, plunger rod 213, long groove 214, needle shaft 22, suture catheter assembly 3, guide rod section 31, guide rod body 311, sleeve 312, third through hole 313, guide holder 314, guide tube 32, needle abutment seat 33, frustum fixture 4, frustum end 41, cylindrical end 42, elastic clamping jaw structure 421, first through hole 43, rotating member 5.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below are exemplary and intended to illustrate the present utility model and should not be construed as limiting the utility model, and all other embodiments, based on the embodiments of the present utility model, which may be obtained by persons of ordinary skill in the art without inventive effort, are within the scope of the present utility model.

Because the existing vascular suture device needs to be ensured to form 45 degrees with the blood vessel when in use, a doctor is required to judge the angle between the vascular suture device and the blood vessel according to experience when in operation, deviation is easy to occur, the difficulty of vascular suture is increased, and the success rate of operation can be influenced even. In addition, when the existing vascular suture device is used for suturing a large-caliber wound, a plurality of vascular suture devices are needed to be used for operation, and the vascular suture device is very inconvenient. In order to solve the technical problems, the utility model provides a vascular suture device.

Referring to fig. 1, an embodiment of the present utility model proposes a vascular stapler, including a control handle assembly 1, one end of the control handle assembly 1 is slidably provided with a plunger push needle assembly 2, the other end of the control handle assembly 1 is provided with a suturing catheter assembly 3, the suturing catheter assembly 3 includes a guide rod portion 31 and a guide tube 32 sleeved at the end of the guide rod portion 31, the guide rod portion 31 is provided with a frustum fixing member 4 and a rotating member 5 for fixing the frustum fixing member 4 on the guide rod portion 31, and an acute angle formed between a generatrix of a frustum end 41 of the frustum fixing member 4 and an axis of a straight line section of the guide rod portion 31 is 45 °. The utility model makes the vascular suture device form 45 degrees in a natural state by arranging the frustum fixing piece 4, is beneficial to a doctor to quickly position without experience or feeling in the operation process, is simple and convenient, and can also improve the success rate of the operation.

Referring to fig. 2, in some embodiments, a first through hole 43 is formed along the axis of the frustum fixing member 4, so that the frustum fixing member 4 can be sleeved on the guide rod portion 31. It will be appreciated that the shape of the first through hole 43 matches the external profile of the guide bar portion 31, so that the frustum fixing member 4 can move over the guide bar portion 31 through the first through hole 43, and the position of the frustum fixing member 4 relative to the guide bar portion 31 can be adjusted according to actual needs.

In some implementations, the frustum fixation 4 includes a frustum end 41, a cylindrical end 42 connected to the frustum end 41; the end of the cylindrical end 42 remote from the frustum end 41 is provided with a resilient jaw structure 421, and the resilient jaw structure 421 can be tightened or loosened. It will be appreciated that the resilient jaw structure 421 may be a three jaw structure or a four jaw structure for clamping the cylindrical end 42 to the guide bar portion 31 to effect fixation of the frustum fixing member 4.

In some embodiments, the cylindrical end 42 is provided with external threads (not shown), and the rotating member 5 is provided with internal threads (not shown) that are adapted to the external threads; when the rotary member 5 and the cylindrical end 42 are fastened by screw, the elastic clamping jaw structure 421 is tightened, so that the elastic clamping jaw structure 421 is pressed and fixed on the guide rod portion 31. It will be appreciated that the degree of engagement of the cylindrical end 42 with the guide rod portion 31 is adjusted by varying the degree of threading of the internal thread of the rotary member 5 with the external thread of the cylindrical end 42, thereby facilitating the physician's adjustment of the vascular stapler prior to surgery.

Referring to fig. 3, in some implementations, the plunger push pin assembly 2 includes a push section 21, a pin shaft 22; the pushing part 21 is slidably disposed at one end of the control handle assembly 1, one end of the needle bar 22 is disposed on the pushing part 21, the other end of the needle bar 22 passes through the control handle assembly 1 and extends to the suture catheter assembly 3, and the needle bar 22 moves under the driving of the pushing part 21.

Referring to fig. 4, in some implementations, the pushing portion 21 includes a first pushing portion 211, a second pushing portion 212, and a plunger rod 213, where an elongated slot 214 is provided on the first pushing portion 211, one end of the second pushing portion 212 is disposed in the elongated slot 214, the other end of the second pushing portion 212 is slidably disposed in the control handle assembly 1 after passing through the elongated slot 214, the plunger rod 213 is slidably disposed in the elongated slot 214, and the plunger rod 213 is used for pushing the needle bar 22. It will be appreciated that needle 22 comprises two hollow needle shafts and two solid needle shafts, wherein the hollow needle shafts and the solid needle shafts are movable under the drive of second pushing portion 212 and are pushed into vascular suturing position by the pushing of plunger rod 213. Through setting up two hollow needle bars and two solid needle bars for vascular suture ware can carry out double-stitch to the puncture.

Referring to fig. 5, in some implementations, the control handle assembly 1 includes a top case 11 and a bottom case 12 adapted to the top case 11, and the top case 11 and the bottom case 12 are respectively provided with a semi-cylindrical groove 13, and the two semi-cylindrical grooves 13 form a cylindrical groove for mounting a crank wrench 14. It will be appreciated that the crank wrench 14 rotates within the cylindrical slot to adjust to the desired position during the procedure.

Referring to fig. 6, in some implementations, the crank wrench 14 is provided with a second through hole 141, and the second through hole 141 is coaxial or non-coaxial with the second pushing portion 212 by driving the crank wrench 14, so as to control the second pushing portion 212 to be able to pass through or not able to pass through the second through hole 141. It will be appreciated that when the vascular stapler is not in use, the crank handle 14 is in the initial position, the second through hole 141 and the second pushing portion 212 are not coaxial, such that the second pushing portion 212 cannot pass through the second through hole 141; when the vascular suturing device is used, the crank wrench 14 is driven to the end position, so that the second through hole 141 and the second pushing part 212 are coaxial, and at the moment, the second pushing part 212 can pass through the second through hole 141 so as to drive the needle rod 22 to realize vascular suturing.

Referring again to fig. 4, in some implementations, a reduced diameter section 2121 is provided on the second propulsion portion 212 to facilitate guiding the second propulsion portion 212 through the second throughbore 141. The reducing section 2121 can reduce the resistance of the second pushing portion 212 passing through the second through hole 141, so that the second pushing portion 212 passing through the second through hole 141 is smoother, which is beneficial to the operation process of the doctor.

Referring again to fig. 5, in some implementations, the control handle assembly 1 further includes a shaft slider 15, and a U-shaped rod 16, where the shaft slider 15 is slidably disposed in the bottom shell 12, one end of the U-shaped rod 16 is detachably connected to the shaft slider 15, and the other end of the U-shaped rod 16 is disposed on the crank wrench 14. It will be appreciated that by providing the U-shaped bar 16, the rotational movement of the crank wrench 14 can be converted into a linear movement, so that the crank wrench 14 can reciprocate by the U-shaped bar 16 driving the shaft slider 15.

Referring to fig. 7, in some embodiments, a positioning groove 151 for installing the U-shaped bar 16 is provided on the shaft slider 15, and a stop protrusion 152 is provided in the positioning groove 151 for limiting the displacement of the U-shaped bar 16 in the vertical direction. It will be appreciated that the stop protrusions 152 are formed of an elastomeric material to facilitate the removal and replacement of the U-shaped bar 16; wherein, the stop protrusion 152 is integrally formed with the shaft slider 15.

In some implementations, a shaft support 17 is provided on the shaft slider 15, the shaft support 17 being used to control the needle abutment 33 of the suturing catheter assembly 3. It will be appreciated that the shaft support 17 controls the state of the abutment seat 33 of the suturing catheter assembly 3 via a shaft (not shown) to assist in achieving vascular suturing.

In some implementations, a spring 18 is provided between the shaft slider 15 and the shaft support 17 to increase the travel margin of the shaft support 17 relative to the shaft slider 15.

Referring to fig. 8, in some implementations, a core rod 19 for alignment is provided between the shaft support 17 and the guide rod portion 31 to ensure alignment between the shaft support 17 and the guide rod portion 31 during installation and sliding.

Referring again to fig. 8, in some embodiments, the guide bar portion 31 includes a guide bar body 311, and a sleeve 312 sleeved over the guide bar body 311. It will be appreciated that the sleeve 312 serves to protect the guide body 311 where the needle shaft 22 can pass through the guide body 311 to the vascular suturing site; the guide rod body 311 is further provided with a plurality of third through holes 313 and a guide seat 314, wherein the third through holes 313 are used for allowing the needle bar 22 and the core bar 19 to pass through, and the guide seat 314 is used for positioning when the guide rod body 311 is mounted and fixed on the bottom shell 12.

The working principle of the utility model is as follows:

when suturing a blood vessel, firstly placing a blood vessel suture device on the skin of a patient, enabling the frustum end 41 of the frustum fixing piece 4 to be attached to the skin of the patient, enabling the angle between the blood vessel suture device and the blood vessel to be 45 degrees, contrasting a target area, penetrating the guide tube 32 into the blood vessel, pulling the crank spanner 14 to a stop position after reaching a suturing position, at the moment, enabling the second through hole 141 on the crank spanner 14 to be coaxial with the second pushing part 212, and enabling the U-shaped rod 16 to drive the shaft rod sliding block 15 and the shaft rod supporting piece 17 to move towards one side of the second pushing part 212 together, so that the needle abutment seat 33 of the suture catheter assembly 3 is adjusted to a working state; then pushing the pushing part 21 to drive the needle bar 22 to move for the first time, then pushing the plunger rod 213 to push the needle bar 22 into the vascular suturing position for suturing, after the intravascular operation is completed, the pushing part 21 can be retracted to complete the whole knotting process, and finally vascular suturing is completed.

The above description of the preferred embodiments of the present utility model should not be taken as limiting the scope of the utility model, but rather should be understood to cover all modifications, variations and adaptations of the present utility model using its general principles and the following detailed description and the accompanying drawings, or the direct/indirect application of the present utility model to other relevant arts and technologies.

Claims (14)

1. The vascular stapler is characterized by comprising a control handle assembly, wherein one end of the control handle assembly is provided with a plunger push needle assembly in a sliding mode, the other end of the control handle assembly is provided with a suturing catheter assembly, the suturing catheter assembly comprises a guide rod portion and a guide tube sleeved at the tail end of the guide rod portion, a frustum fixing piece and a rotating piece used for fixing the frustum fixing piece on the guide rod portion are arranged on the guide rod portion, and an acute angle formed between a generatrix of the frustum end of the frustum fixing piece and an axis of a straight line section of the guide rod portion is 45 degrees.

2. The vascular stapler of claim 1, wherein a first through hole is provided along an axis of the frustum fixing member so that the frustum fixing member can be fitted over the guide bar portion.

3. The vascular stapler of claim 1, wherein the frustum fixation member includes a frustum end, and a cylindrical end connected to the frustum end; the cylinder end is kept away from the one end of frustum end sets up to elasticity clamping jaw structure, elasticity clamping jaw structure can tighten up or loosen.

4. The vascular stapler according to claim 3, wherein the cylindrical end is provided with external threads, and the rotary member is provided with internal threads adapted to the external threads; when the rotary piece is fastened with the cylindrical end through threads, the elastic clamping jaw structure is tightened, so that the elastic clamping jaw structure is tightly pressed and fixed on the guide rod part.

5. The vascular stapler of claim 1, wherein the plunger push needle assembly comprises a push portion, a needle shaft; the pushing part is arranged at one end of the control handle assembly in a sliding manner, one end of the needle bar is arranged on the pushing part, the other end of the needle bar penetrates through the control handle assembly and extends to the suture catheter assembly, and the needle bar moves under the driving of the pushing part.

6. The vascular stapler of claim 5, wherein the pushing portion includes a first pushing portion, a second pushing portion, and a plunger rod, the first pushing portion is provided with a long slot, one end of the second pushing portion is disposed in the long slot, the other end of the second pushing portion passes through the long slot and is slidably disposed in the control handle assembly, the plunger rod is slidably disposed in the long slot, and the plunger rod is used for pushing the needle rod.

7. The vascular stapler of claim 6, wherein the control handle assembly includes a top housing, a bottom housing adapted to the top housing, and wherein the top housing and the bottom housing are each provided with a semi-cylindrical slot, the two semi-cylindrical slots defining a cylindrical slot for receiving a crank wrench.

8. The vascular stapler of claim 7, wherein the crank handle is provided with a second through hole, and the crank handle is driven to make the second through hole coaxial or non-coaxial with the second pushing portion, so as to control the second pushing portion to pass through or not pass through the second through hole.

9. The vascular stapler of claim 8, wherein the second pusher portion is provided with a reduced diameter section to facilitate guiding the second pusher portion through the second throughbore.

10. The vascular stapler of claim 7, wherein the control handle assembly further comprises a shaft slider slidably disposed within the bottom housing, a U-shaped bar having one end detachably connected to the shaft slider, and the other end disposed on the crank handle.

11. The vascular stapler of claim 10, wherein the shaft slider is provided with a positioning groove for mounting the U-shaped bar, and a stopper protrusion is provided in the positioning groove for restricting the displacement of the U-shaped bar in the vertical direction.

12. The vascular stapler of claim 10, wherein a shaft support is provided on the shaft sled for controlling a needle abutment of the suturing catheter assembly to assist in achieving vascular suturing.

13. The vascular stapler of claim 12, wherein a resilient member is disposed between the shaft sled and the shaft support to increase a travel margin of the shaft support relative to the shaft sled.

14. The vascular stapler of claim 12, wherein a core bar for alignment is provided between the shaft support and the guide bar portion to ensure alignment between the shaft support and the guide bar portion during installation and sliding.