Umbilical cord blood vessel removing device

Abstract

The utility model relates to an umbilical cord blood vessel removing device which comprises a base and an annular blade, a rotating support is arranged on one side of the base, a round tube used for penetrating through a blood vessel is transversely arranged on the upper portion of the rotating support, the annular blade is used for being arranged on the round tube in a sleeved mode after the round tube penetrates through the blood vessel, and the cutting edge direction faces one side of the rotating support. An elastic body used for hooking the annular blade to move towards one side of the support is installed in the round pipe, and an umbilical cord fixing clamp used for swinging into a clamping cavity of the round pipe is further arranged on the base. The umbilical cord blood vessel removing device is compact in structure, can be used for removing blood vessels of the umbilical cord conveniently, and is beneficial to improving blood vessel removing efficiency.

Description

Technical Field

[0001] This utility model relates to a device for removing blood vessels from the umbilical cord. Background Technology

[0002] Umbilical cord mesenchymal stem cells (MSCs) have high differentiation potential and can differentiate in multiple directions. They have broad clinical application prospects in tissue engineering of bone, cartilage, muscle, tendon, ligament, nerve, liver, endothelium, and myocardium.

[0003] In umbilical cord mesenchymal culture, fresh, healthy umbilical cords are taken, rinsed with PBS, and then the three blood vessels and epidermis are removed using scissors and forceps. The inner Fahrenheit jelly tissue is then peeled off, and the resulting tissue is finely minced to 1 mm³. It is then added to α-MEM culture medium and incubated at 37°C in a 5% CO₂ incubator. The culture medium contains 10% FBS, 100 U / ml penicillin, and 100 U / ml streptomycin. This method of removing umbilical cord blood vessels using scissors and forceps is not only inconvenient but also slow. Therefore, an umbilical cord devascularization device is needed. Utility Model Content

[0004] The purpose of this invention is to provide an umbilical cord devascularization device that has a compact structure, is convenient for removing blood vessels from the umbilical cord, and helps to improve the efficiency of devascularization.

[0005] The technical solution of this utility model is as follows: an umbilical cord devascularization device, including a base and an annular blade. A rotating bracket is provided on one side of the base. A circular tube for passing through a blood vessel is provided laterally on the upper part of the rotating bracket. The annular blade is used to fit on the circular tube after it passes through the blood vessel, with the blade facing one side of the rotating bracket. An elastic body for hooking the annular blade and moving it toward one side of the bracket is installed inside the circular tube. An umbilical cord fixing clamp for rotating the circular tube into its clamping cavity is also provided on the base.

[0006] Furthermore, the rotating support includes a first upright, the lower part of which is rotatably connected to the base, a drive handwheel is provided at the top of the first upright, and one end of the round tube is connected to the first upright.

[0007] Furthermore, the lower end of the rotating bracket is detachably connected to the base.

[0008] Furthermore, the elastic body is a spring with hooks at both ends. One end of the spring is connected to the end of the round tube near the rotating bracket. The side wall of the round tube is provided with a groove along the axial direction to guide the hook of the other end of the spring.

[0009] Furthermore, the end of the annular blade away from the circular tube is provided with a recess for engagement with the hook of the spring.

[0010] Furthermore, two springs are installed inside the circular tube, and the front and rear sidewalls of the circular tube are provided with axially spaced channels for guiding the movement of the hook at the other end of the spring.

[0011] Furthermore, the umbilical cord fixing clip includes a pair of clamping plates, each of which has a transversely arranged arc-shaped clamping part at its front end. The arc openings of the two arc-shaped clamping parts face each other, and the inner wall of the arc-shaped clamping parts is densely covered with protruding teeth. The middle of the pair of clamping plates is hinged together and provided with an elastic element that enables the two arc-shaped clamping parts to have clamping force.

[0012] Furthermore, each of the clamping plates is provided with a pair of wing plates in the middle, and the pair of clamping plates are hinged together by a pin that passes laterally through the two pairs of wing plates. A torsion spring with both ends abutting against the clamping plates is sleeved in the middle of the pin.

[0013] Furthermore, the two arc-shaped clamping parts cooperate to form a tubular clamping cavity, and the outer diameter of the circular tube is smaller than the inner diameter of the tubular clamping cavity formed by the two arc-shaped clamping parts.

[0014] Furthermore, a second upright is vertically inserted into the base, and the upper end of the second upright is fixedly connected to the clamping plate located on the lower side.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This umbilical cord devascularization device has a simple and compact structure. It is convenient to use for removing blood vessels from the umbilical cord by means of a round tube and an umbilical cord fixing clamp, which helps to improve the efficiency of devascularization.

[0017] 2. The device is detachable, which facilitates subsequent cleaning after use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model (spring in retracted state);

[0019] Figure 2 This is a schematic diagram of the structure of the spring inside the circular tube of this utility model, which extends and hooks onto the annular blade.

[0020] Figure 3 This is a schematic diagram of a circular tube with another structure according to the present invention;

[0021] Figure 4 This is a side sectional view of the umbilical cord fixing clip of this utility model;

[0022] Figure 5 This is a schematic diagram of the circular tube swinging into the clamping cavity of the umbilical cord fixing clip according to the present invention;

[0023] Figure 6 This utility model relates to a tweezers structure containing a blade.

[0024] In the diagram: 1-base 2-ring blade 21-recess 3-rotating bracket 31-first upright 32-rotating part 33-drive handwheel 4-round tube 41-slot 5-elastic body 6-umbilical cord fixing clip 61-clamping plate 62-arc clamping part 63-protruding tooth 64-elastic element 65-wing plate 66-pin 67-second upright 7-tweezers 71-blade. Detailed Implementation

[0025] To make the above-mentioned features and advantages of this utility model more easily understood, specific embodiments are described below in conjunction with the accompanying drawings, but this utility model is not limited thereto.

[0026] refer to Figures 1 to 6

[0027] An umbilical cord devascularization device includes a base 1 and an annular blade 2. A rotating support 3 is provided on one side of the base. A circular tube 4 for passing through a vein is horizontally arranged on the upper part of the rotating support. The annular blade is used to fit over the circular tube after it passes through the vein. The cutting edge of the annular blade is in the same direction as its axis and faces the rotating support. An elastic body 5 is installed inside the circular tube to hook the annular blade and move it towards the support. An umbilical cord fixing clip 6 is also provided on the base. The umbilical cord fixing clip is used to hook the umbilical cord skin when the circular tube swings into its clamping cavity, which helps to prevent umbilical cord displacement or retraction. The elastic body allows the annular blade to better cut the jelly tissue outside the vein from the inside of the umbilical cord.

[0028] In this embodiment, in order to realize the swing of the circular tube, the rotating support includes a first upright 31. The lower part of the first upright is rotatably connected to the base via a rotating part 32. A drive handwheel 33 is provided at the top of the first upright. One end of the circular tube is connected to the first upright. The swing of the circular tube can be better accomplished by driving the handwheel.

[0029] In another embodiment, one end of the circular tube can be rotatably connected to the first upright and is provided with a crank (not shown in the figure) to drive the circular tube to rotate. The end of the circular tube that cooperates with the first connecting rod can pass through the first upright so that both ends of the circular tube are open for easy cleaning.

[0030] In this embodiment, the lower end of the rotating bracket is detachably connected to the base, for example, by inserting it into the base through a rotating part, so that the rotating bracket and the round tube can be removed for cleaning.

[0031] In this embodiment, to better drive the annular blade towards the rotating support and cut the outer wall of the blood vessel from the Fahrenheit colloid tissue, the elastomer is a spring with hooks at both ends. One end of the spring is connected to the end of a circular tube near the rotating support. The side wall of the circular tube has an axially oriented groove 41 for guiding the movement of the hook at the other end of the spring. One end of the circular tube has a circular hole or recess that mates with the hook at one end of the spring, or one end of the spring is fixed to the circular tube. In use, the hook at the other end of the spring passes through the groove and hooks onto the non-blade side of the annular blade. The groove serves as a guide track for the hook, and the elastic force of the spring pulls the annular blade towards the rotating support.

[0032] In this embodiment, in order to be better caught by the hook of the spring, the end of the annular blade away from the round tube is provided with a recess 21 for engaging with the hook of the spring, and the hook is positioned by the recess.

[0033] In another embodiment, in order to make the force on the annular blade more stable, two springs are provided inside the circular tube. The front and rear side walls of the circular tube are provided with grooves along the axial direction to guide the hooks at the other end of the springs. Two recesses are provided on both sides of the annular blade to cooperate with the hooks of the two springs.

[0034] In this embodiment, the umbilical cord fixing clip includes a pair of clamping plates 61. Each clamping plate has a laterally arranged arc-shaped clamping part 62 at its front end. The arc openings of the two arc-shaped clamping parts face each other, and the inner walls of the arc-shaped clamping parts are densely covered with protruding teeth 63. The middle parts of the pair of clamping plates are hinged together and equipped with an elastic element 64 that provides clamping force to the two arc-shaped clamping parts. The umbilical cord skin is hooked by the inner protruding teeth of the pair of arc-shaped clamping parts, and the elastic element ensures that the two arc-shaped clamping parts always have opposing clamping forces.

[0035] In this embodiment, each of the clamping plates is provided with a pair of wing plates 65 in the middle. The pair of clamping plates are hinged together by a pin 66 that passes laterally through the two pairs of wing plates. A torsion spring with both ends abutting against the clamping plates is sleeved in the middle of the pin.

[0036] In this embodiment, the two arc-shaped clamping parts cooperate to form a tubular clamping cavity. The outer diameter of the round tube is smaller than the inner diameter of the tubular clamping cavity formed by the two arc-shaped clamping parts, so that the two arc-shaped clamping parts can hook onto the umbilical cord skin without affecting the movement of the annular blade.

[0037] In this embodiment, the outer diameter of the circular tube can be about 3mm and the length about 15cm, while the outer diameter of the annular blade can be 3.5mm and the length is 3~8mm. The inner diameter of the tubular structure formed by the two arc-shaped clamping parts is 6~15mm, and the lateral length can be slightly smaller than the length of the circular tube, for example, 12~14cm.

[0038] In this embodiment, for the installation of the positioning umbilical cord fixation clip, a second upright rod 67 is vertically inserted into the base, and the upper end of the second upright rod is fixedly connected to the clamp plate located on the lower side. The insertion of the second upright rod into the base facilitates the disassembly and cleaning of the umbilical cord fixation clip.

[0039] In this embodiment, forceps 7 with two blades 71 can also be provided to assist in umbilical cord peeling, or when the spring is close to resetting, the umbilical cord clamp can be opened, and the umbilical cord skin can be manually clamped and pulled to the right by the forceps to completely separate the blood vessels from the jelly tissue of the umbilical cord.

[0040] In use, first pull the hook at the other end of the spring to the right using a rope or other tool and hook it onto the end of the round tube away from the rotating support. Then, align the umbilical cord cut to a certain length (e.g., 8-10cm) with the round tube and let the tube pass through the blood vessel. Open the umbilical cord clamp and swing the round tube into the tubular clamping cavity of the umbilical cord clamp. The umbilical cord clamp closes and hooks the umbilical cord skin with its densely packed protruding teeth. Use tweezers or other tools to place a ring blade on the round tube, and push the hook at the other end of the spring into the groove so that the hook hooks onto the ring blade. Use the elastic force of the spring's contraction to let the ring blade cut the outer wall of the blood vessel from the jelly tissue. If the elastic force of the spring does not completely cut the blood vessel from the jelly tissue, open the umbilical cord clamp to let the round tube detach from the clamp. Then, use clamping tools such as tweezers or clamps to hold the umbilical cord and pull it outward so that the blood vessel is completely separated from the jelly tissue. Finally, remove the blood vessel from the round tube. Repeating the above steps will separate all three blood vessels within the umbilical cord. The umbilical cord skin can then be peeled off using tweezers or similar tools to obtain the final Fahrenheit jelly tissue.

[0041] If the terms "first" and "second" are used in the above description to define the components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of distinguishing the components in the description. Unless otherwise stated, the above terms have no special meaning.

[0042] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws) or a non-detachable fixed connection (e.g., riveting or welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0043] In addition, unless otherwise stated, the terms used in any of the technical solutions disclosed in this utility model to indicate positional relationships or shapes include states or shapes that are similar to, close to, or approximate with those states or shapes.

[0044] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0045] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. An umbilical cord decannulation device comprising a base and a ring-shaped blade, characterized in that, A rotating bracket is provided on one side of the base, and a round tube for passing through the blood vessel is provided horizontally on the upper part of the rotating bracket. The annular blade is used to fit on the round tube after it passes through the blood vessel, with the blade facing one side of the rotating bracket. An elastic body for hooking the annular blade and moving it toward one side of the bracket is installed inside the round tube. An umbilical cord fixing clamp is also provided on the base for hooking the umbilical cord skin when the round tube swings into its clamping cavity.

2. The umbilical de-vascularization device of claim 1, wherein, The rotating support includes a first upright, the lower part of which is rotatably connected to the base, a drive handwheel at the top of the first upright, and one end of the round tube connected to the first upright.

3. The umbilical devascularization device according to claim 1 or 2, characterized in that, The lower end of the rotating bracket is detachably connected to the base.

4. The umbilical devascularization device according to claim 1 or 2, characterized by The elastic body is a spring with hooks at both ends. One end of the spring is connected to the end of the round tube near the rotating support. The side wall of the round tube is provided with a groove along the axial direction to guide the movement of the hook at the other end of the spring.

5. The umbilical devascularization device according to claim 4, characterized in that, The annular blade has a recess at the end away from the circular tube for engagement with a hook portion of the spring.

6. The umbilical devascularization device according to claim 4, wherein The circular tube contains two springs, and the front and rear sidewalls of the circular tube are provided with axially spaced channels for guiding the hooks at the other end of the springs.

7. The umbilical de-vascularization device of claim 1, 2, 5, or 6, wherein, The umbilical cord fixing clip includes a pair of clamping plates. The front ends of the pair of clamping plates are laterally provided with arc-shaped clamping parts. The arc openings of the two arc-shaped clamping parts face each other, and the inner walls of the arc-shaped clamping parts are densely covered with protruding teeth. The middle parts of the pair of clamping plates are hinged together and provided with elastic elements that give the two arc-shaped clamping parts clamping force.

8. The umbilical devascularization device according to claim 7, characterized in that Each clamping plate has a pair of wing plates in the middle. The pair of clamping plates are hinged together by a pin that passes laterally through the two pairs of wing plates. A torsion spring with both ends abutting against the clamping plate is sleeved in the middle of the pin.

9. The umbilical devascularization device according to claim 7, characterized by The two arc-shaped clamping parts cooperate to form a tubular clamping cavity, and the outer diameter of the circular tube is smaller than the inner diameter of the tubular clamping cavity formed by the two arc-shaped clamping parts.

10. The umbilical devascularization device according to claim 7, characterized by The base is vertically inserted with a second upright, and the upper end of the second upright is fixedly connected to the clamping plate located on the lower side.

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