Microscopic blood vessel puncher

Abstract

The utility model relates to a microscopic blood vessel puncher which comprises a tweezers body, the tweezers body comprises a first tweezers rod and a second tweezers rod which are oppositely arranged, one end of the first tweezers rod is connected with one end of the second tweezers rod, a cutting groove is concavely formed in the other end of the first tweezers rod, and a tool bit matched with the cutting groove in shape is convexly arranged at the other end of the second tweezers rod. One end of the cutter head towards the cutting groove is provided with a blade. When the puncher is used for preparing a blood vessel side hole, a blood vessel extends between the first forcep rod and the second forcep rod, the positions of the cutting groove and the tool bit are aligned to the position, needing to be punched, of the blood vessel, then the first forcep rod and the second forcep rod are closed, the tool bit is inserted into the cutting groove, the blood vessel is cut through the cutting edge of the tool bit, and the side hole is formed without manual hole cutting; the shape, the size and the smoothness of the hole are effectively controlled, the vascular intima is protected, the one-time punching success rate is increased, repeated operation on a main blood vessel is reduced, and the continuity of the blood vessel is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a microvascular puncher. Background Art

[0002] At present, when performing end-to-side anastomosis of blood vessels in clinical microsurgery operations such as replantation of severed fingers (limbs) and free flap transplantation, it is necessary to prepare side holes in the blood vessels in advance. Now, it is generally done by manually cutting holes in the blood vessels. Because the blood vessels to be anastomosed are very small, it is difficult to effectively control the shape, size and smoothness of the holes manually, and it is easy to damage the vascular endothelium, thereby reducing the distal blood supply and blood flow through the anastomosis, and finally causing necrosis after replantation of severed fingers (limbs) and free flap transplantation. Utility Model Content

[0003] The utility model aims to provide a microvascular puncher which can effectively control the shape, size and smoothness of a hole.

[0004] In order to achieve the purpose of this utility model, the technical solution adopted is:

[0005] A microvascular puncher comprises a tweezers body, wherein the tweezers body comprises a first tweezers rod and a second tweezers rod which are arranged opposite to each other, wherein one end of the first tweezers rod is connected to one end of the second tweezers rod, the other end of the first tweezers rod is concavely provided with a cutting groove, the other end of the second tweezers rod is convexly provided with a knife head which matches the shape of the cutting groove, and the end of the knife head which faces the cutting groove is provided with a blade.

[0006] When the puncher is used to prepare a side hole in a blood vessel, the blood vessel is inserted between the first forceps rod and the second forceps rod, the cutting groove and the knife head are aligned with the position where the hole is to be opened in the blood vessel, the first forceps rod and the second forceps rod are then closed, the knife head is inserted into the cutting groove, the blood vessel is cut by the blade of the knife head to form a side hole, no manual cutting of the hole is required, the shape, size and smoothness of the hole are effectively controlled, the blood vessel endothelium is protected, the success rate of one-time punching is improved, repeated operations on the main blood vessel are reduced, and the continuity of the blood vessel is maintained.

[0007] The following is a further description of the technical solution:

[0008] Furthermore, a scale line is provided on the side of the first tweezer rod corresponding to the position of the cutting groove, and the size of the side hole can be accurately controlled by the scale line, thereby improving the accuracy of the punch.

[0009] Furthermore, the side wall of the cutter head is provided with scale lines, through which the size of the side hole can be accurately controlled, thereby improving the accuracy of the punch.

[0010] Furthermore, the cross section of the cutting groove is circular.

[0011] Furthermore, the cutter head is detachably connected to the second tweezer rod, which facilitates the replacement of the cutter head and prolongs the service life of the hole puncher.

[0012] Furthermore, the side of the cutter head facing away from the blade is threadedly connected to the second tweezer rod. The cutter head is more convenient to disassemble and install by threaded connection and fixing.

[0013] Furthermore, a spring is connected between the first tweezers rod and the second tweezers rod. In a natural state, the spring stretches the first tweezers rod and the second tweezers rod apart; during operation, the spring is used to control the operator's strength to improve accuracy, and after the operation is completed, the spring resets the two tweezers rods to spring apart, making it easier to clean the cut part.

[0014] Furthermore, the hand-held parts of the first tweezers rod and the second tweezers rod are both provided with anti-skid parts to prevent slipping during operation and improve safety.

[0015] Furthermore, the anti-skid portion is provided with anti-skid teeth, which increase the friction between the hand-held portion and the hand, and the structure is simple in design and more convenient to use.

[0016] Furthermore, the cutter head is a hollow structure, and the inner hole of the cutter head is consistent with the outer periphery, which increases the sharpness of the blade position, avoids the residual intima tissue on the inner wall of the side hole blood vessel, ensures the smoothness of the intima, and improves the anastomosis quality.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] When preparing a side hole in a blood vessel, the utility model extends the blood vessel between the first forceps rod and the second forceps rod, aligns the cutting groove and the knife head with the position of the blood vessel where the hole needs to be opened, closes the first forceps rod and the second forceps rod, inserts the knife head into the cutting groove, cuts the blood vessel by the blade of the knife head and forms the side hole, does not require manual cutting of the hole, effectively controls the shape, size and smoothness of the hole, protects the blood vessel endothelium, improves the success rate of one-time drilling, reduces repeated operations on the main blood vessel, and maintains the continuity of the blood vessel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a microvascular puncher according to an embodiment of the utility model.

[0020] Description of reference numerals:

[0021] 10. first tweezers rod, 110. cutting groove, 120. scale line, 20. second tweezers rod, 210. cutting head, 30. spring, 40. anti-slip part. DETAILED DESCRIPTION

[0022] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0023] like Figure 1As shown, a microvascular puncher includes a forceps body, which includes a first forceps rod 10 and a second forceps rod 20 that are relatively arranged. One end of the first forceps rod 10 is connected to one end of the second forceps rod 20, and the other end of the first forceps rod 10 is recessed with a cutting groove 110, and the other end of the second forceps rod 20 is convexly provided with a knife head 210 that matches the shape of the cutting groove 110, and the end of the knife head 210 facing the cutting groove 110 is provided with a blade.

[0024] When the puncher is used to prepare a side hole in a blood vessel, the blood vessel is inserted between the first forceps rod 10 and the second forceps rod 20, so that the cutting groove 110 and the knife head 210 are aligned with the position where the blood vessel needs to be opened, and then the first forceps rod 10 and the second forceps rod 20 are closed, and the knife head 210 is inserted into the cutting groove 110. The blood vessel is cut by the blade of the knife head 210 to form a side hole. There is no need for manual cutting of the hole, and the shape, size and smoothness of the hole are effectively controlled, the blood vessel endothelium is protected, the success rate of one-time punching is improved, repeated operations on the main blood vessel are reduced, and the continuity of the blood vessel is maintained.

[0025] In this embodiment, the cross section of the cutting groove 110 is circular, the blade head 210 is cylindrical, and the blade head 210 is a hollow structure. The inner hole of the blade head 210 is consistent with the outer shape, which increases the sharpness of the blade position, avoids the residual intimal tissue on the inner wall of the side hole blood vessel, ensures the smoothness of the intimal, and improves the anastomosis quality. The cutting groove 110 and the blade head 210 can also be set to other shapes according to actual needs.

[0026] like Figure 1 As shown, the side of the first forceps rod 10 corresponding to the position of the cutting groove 110 is provided with a diameter scale line 120, and the scale accuracy is 0.05mm. The scale line 120 can accurately control the size of the side hole, which is convenient for measuring the blood vessel diameter and improving the accuracy of the puncher. The puncher can also choose to set scale lines 120 on the side wall of the cutter head 210, or set corresponding scale lines 120 at the positions of the cutting groove 110 and the cutter head 210. During operation, by checking whether the scale lines 120 at the position of the cutting groove 110 and the scale lines 120 at the position of the cutter head 210 correspond, the punching accuracy is further improved.

[0027] The side of the cutter head 210 facing away from the blade is threadedly connected to the second tweezer rod 20, making it easier to disassemble and install the cutter head 210 and prolonging the service life of the punch. The cutter head 210 and the second tweezer rod 20 can also be connected in other detachable ways.

[0028] like Figure 1 As shown, a spring 30 is connected between the first tweezers rod 10 and the second tweezers rod 20. In a natural state, the spring 30 spreads the first tweezers rod 10 and the second tweezers rod 20 apart. During operation, the spring 30 is used to control the strength of the operator to improve accuracy. After the operation is completed, the spring 30 is reset to make the two tweezers rods pop apart, which is convenient for cleaning the cut part.

[0029] like Figure 1 As shown, the hand-holding parts of the first tweezers rod 10 and the second tweezers rod 20 are both provided with anti-skid parts 40 to prevent slipping during operation and improve safety.

[0030] In this embodiment, the anti-skid portion 40 is provided with anti-skid teeth, which increase the friction between the hand-held portion and the hand, and the structure design is simple and more convenient to use. The anti-skid portion 40 can also adopt other anti-skid methods such as anti-skid sleeves according to actual needs.

[0031] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0032] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A microvascular puncher, It is characterized in that The present invention comprises a tweezer body, wherein the tweezer body comprises a first tweezer rod and a second tweezer rod which are arranged opposite to each other, wherein one end of the first tweezer rod is connected to one end of the second tweezer rod, the other end of the first tweezer rod is recessed with a cutting groove, the other end of the second tweezer rod is convexly provided with a cutting head which matches the shape of the cutting groove, and the end of the cutting head facing the cutting groove is provided with a cutting edge.

2. The microvascular puncher according to claim 1, It is characterized in that A scale line is provided on the side of the first tweezers rod corresponding to the position of the cutting groove.

3. The microvascular puncher according to claim 1, It is characterized in that The side wall of the cutter head is provided with scale lines.

4. The microvascular puncher according to claim 2 or 3, It is characterized in that The cross section of the cutting groove is circular.

5. The microvascular puncher according to claim 1, It is characterized in that The knife head is detachably connected to the second tweezers rod.

6. The microvascular puncher according to claim 5, It is characterized in that The side of the knife head facing away from the knife blade is threadedly connected to the second tweezer rod.

7. The microvascular puncher according to claim 1, It is characterized in that A spring is connected between the first tweezers rod and the second tweezers rod.

8. The microvascular puncher according to claim 1, It is characterized in that The hand-holding parts of the first tweezers rod and the second tweezers rod are both provided with anti-slip parts.

9. The microvascular puncher according to claim 8, It is characterized in that The anti-skid portion is provided with anti-skid teeth.

10. The microvascular punch according to any one of claims 1 to 3 and 5 to 9, It is characterized in that The cutter head is a hollow structure, and the inner hole of the cutter head is consistent with the outer periphery shape.

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