Blood vessel blocking assembly
By combining the cannula and the blocking band of the deformable flexible hollow tube structure, the existing vascular blocking technology solves the problem of difficulty in detecting endometrium damage and bleeding, achieving safer vascular blockade and efficient bleeding detection.
Patent Information
- Application Number
- CN202420880376.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-04-25
AI Technical Summary
The existing vascular blocking technology is prone to damage the endometrium of the vascular system and cannot effectively detect vascular bleeding.
A vascular blocking component is used to combine a cannula and a blocking belt with a deformable flexible hollow tube structure. The pressure of the cannula deforms the blocking belt, enlarges the contact surface with the blood vessel, avoids damage to the endometrium of the blood vessel, and at the same time, a second fixing clip is designed to facilitate blood circulation to detect bleeding.
It effectively prevents damage to the endometrium of the vascular system and can detect blood vessel bleeding. It has a delicate structure, convenient operation, and efficient use of the chest space.
Smart Images
Figure CN222777341U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of medical devices, and in particular to a blood vessel blocking component. Background Art
[0002] Laparoscopic surgery has the advantages of less trauma and quick recovery, and is more acceptable to patients. Therefore, the number of laparoscopic surgeries has increased rapidly in recent years. During laparoscopic surgery, it is usually necessary to block the relevant main blood vessels to prevent blood outflow.
[0003] For example, thoracic laparoscopic surgery is a common type of laparoscopic surgery. During the operation, the pulmonary artery needs to be blocked to prevent the pulmonary artery from bleeding due to accidental damage, so as to complete the operation smoothly. Commonly, the pulmonary artery is blocked with a blocking wire, but this blocking method is prone to damage to the vascular endothelium and the pulmonary artery cannot be detected after the blocking wire is relaxed. Utility Model Content
[0004] The present application provides a blood vessel blocking component, one purpose of which is to prevent damage to the pulmonary artery endothelium. At the same time, since the kit has a sophisticated structure and is easy to operate, it can save surgical operation space and has a high utilization rate of chest space.
[0005] Vascular occlusion kit, including:
[0006] a casing having a passage;
[0007] The blocking band is a deformable flexible hollow tube, which is folded in half and movably inserted into the channel. It has a blocking portion extending out of the sleeve in a ring structure and an operating portion for pulling the blocking band to tighten the blood vessel.
[0008] When in use, the blocking band is folded in half and passed around the pulmonary artery before being inserted into the sleeve. After the blocking band is folded in half and passed through the sleeve, both ends extend out of the sleeve, one end is the blocking part and the other end is the operating part. The blood vessel is located in the annular structure of the blocking part. The operating part of the blocking band is held and the sleeve is forced toward the blood vessel so that the sleeve is pressed against the blood vessel, the blocking part is squeezed to reduce the aperture of its annular structure, the blood vessel is tightened, and then the sleeve and the blocking band are locked to limit the relative movement of the sleeve and the blocking band and lock the entire blood vessel blocking assembly in a blocking state.
[0009] The present application adopts a blocking method that cooperates with a sleeve and a blocking band, so that the force of tightening the blood vessel can be better controlled. While blocking the blood flow in the blood vessel, the blood vessel will not be tightened too much, which can prevent damage to the blood vessel endothelium.
[0010] Optionally, the blocking band is a deformable flexible hollow tube. While the cannula is pushed to tighten the blood vessel, the blocking band itself is also deformed due to being squeezed. The blocking band with a hollow tubular structure can increase its contact surface with the blood vessel during the process of being squeezed and deformed, thereby preventing damage to the blood vessel endothelium. Therefore, the blocking band with a hollow tube structure can further protect the blood vessel endothelium from being damaged during the process of tightening the blood vessel due to its own deformation characteristics.
[0011] Optionally, the diameter of the blocking band is 1-1.5 mm. Further, the diameter of the blocking band is 1 mm. The diameter here can be understood as the outer diameter of the blocking band.
[0012] Optionally, both ends of the blocking band have guide tips for guiding it to penetrate into the sleeve.
[0013] Optionally, a first fixing clamp is further included, which is used to clamp and fix the sleeve and the blocking band to limit the relative movement of the two. It is convenient to lock the sleeve and the blocking band. After the sleeve is operated to block the blood vessel, the first fixing clamp is operated to clamp the sleeve to fix the sleeve and the blocking band at the same time, so that the sleeve and the blocking band are locked in a blocking state.
[0014] Optionally, the outer peripheral surface of the sleeve has a clamping portion that cooperates with the first fixing clamp.
[0015] Optionally, the clamping portion is an annular groove circumferentially surrounding the outer circumferential surface of the sleeve; the clamping portion is 1 to 2 cm away from the end of the sleeve close to the blocking band operation.
[0016] Optionally, the sleeve has a distal end and a proximal end opposite to each other, the distal end of the sleeve is against the blood vessel, and the aperture of the channel is gradually reduced from the proximal end to the distal end. The sleeve is set as a large and small head structure, and the aperture of the channel at the end against the blood vessel is smaller, which is conducive to tightening the blood vessel and convenient for operation.
[0017] Optionally, the distal aperture of the channel is 3-4 mm, and the proximal aperture is 5-6 mm.
[0018] Optionally, the length of the blocking band is 60-100 cm; the length of the sleeve is 4-6 cm.
[0019] The present application not only solves the problem of blood vessel blocking, but also solves the problem of blood vessel bleeding point detection. Optionally, it also includes a second fixing clamp for clamping the operating part of the blocking band; a sleeve retreat gap is reserved between the clamping position of the second fixing clamp and the end of the sleeve.
[0020] When detecting the bleeding state of the blood vessel, the second fixing clamp is kept in the clamping state, the first fixing clamp is opened, the sleeve is slowly withdrawn, the blood vessel is reopened, and the bleeding state of the blood vessel can be detected.
[0021] Optionally, the sleeve retraction clearance is 0.5~1.5cm.
[0022] Compared with the prior art, the present invention has at least one of the following beneficial effects:
[0023] (1) Prevent damage to the vascular endothelium;
[0024] (2) It can detect vascular bleeding;
[0025] (3) It has a sophisticated structure, is easy to operate, and has high utilization of the chest space. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 and Figure 2 This is a schematic diagram of the structure of the blood vessel blocking component of the present application at different angles;
[0027] Figure 3 and Figure 4 This is a schematic diagram of the structure of the blood vessel blocking component of the present application in the blocking state;
[0028] Figure 5~Figure 7 This is a reference diagram of the use status of the blood vessel blocking component of this application.
[0029] The reference numerals shown in the figures are as follows:
[0030] 1. Cannula; 2. Blocking band; 3. Blood vessel; 4. First fixing clip; 5. Second fixing clip;
[0031] 11. Channel; 12. Clamping portion; 21. Blocking portion; 22. Operating portion. DETAILED DESCRIPTION
[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.
[0034] A vascular occlusion component, participating Figure 1~Figure 4, comprising a sleeve 1 and a blocking band 2, the sleeve 1 having an axially through passage 11, the blocking band 2 being in a folded state and passing through the passage 11 of the sleeve 1, the blocking band 2 being folded in half and passing through the passage 11, both ends of which extend out of the passage, one end of which forms a blocking portion 21 having an annular structure, and the other end serves as an operating portion 22 for pulling the blocking band to make the blocking portion tighten the blood vessel 3, and the blood vessel 3 passes through the annular structure of the blocking portion. When in use, the operating portion 22 of the blocking band is held and the sleeve 1 is forced toward the blood vessel 3, so that the sleeve 1 is pressed against the blood vessel 3, the blocking portion 21 is squeezed to reduce the aperture of its annular structure, and the blood vessel 3 is tightened, and then the sleeve 1 and the blocking band 2 are fixed at the same time, the relative movement of the sleeve 1 and the blocking band 2 is restricted and the entire blood vessel blocking assembly is locked in a blocking state. The sleeve 1 has a relative proximal end and a distal end, for the convenience of description, the end approaching the blood vessel 3 when in use is the distal end, and the proximal end opposite thereto is toward the operating portion 22 of the blocking band 2.
[0035] In order to more conveniently lock and fix the sleeve 1 and the blocking band 2, the blood vessel blocking assembly of the present application further includes a first fixing clip 4 (see Figure 5 ), after the sleeve 1 and the blocking band 2 are operated to block the blood vessel, the first fixing clamp 4 is clamped outside the sleeve 1 and fixes the sleeve 1 and the blocking band 2 at the same time to limit the relative movement of the sleeve and the blocking band.
[0036] In order to facilitate the clamping of the first fixing clamp and increase the firmness after clamping, the outer circumference of the sleeve near the proximal end of the sleeve can be flattened. For example, a circle of the outer circumference of the sleeve can be processed to increase the friction coefficient to form a circle of annular grooves, which constitute the clamping part of the first fixing clamp. The position of the clamping part is preferably 1 to 2 cm away from the proximal end of the sleeve.
[0037] The blocking band 2 is used to bypass the blood vessel and put the blood vessel into its blocking part. As an implementation method of the blocking band, the blocking band can adopt a deformable flexible hollow tube structure. While pushing the tube to tighten the blood vessel, the blocking band itself is also deformed due to being squeezed. The hollow tubular structure increases its contact area with the blood vessel during the process of being squeezed and deformed, thereby preventing damage to the blood vessel endothelium.
[0038] After the blocking band passes around the blood vessel, it is folded in half, and both ends of the blocking band need to be inserted into the cannula channel. In order to make the blocking band pass through the cannula more smoothly, both ends of the blocking band have guide tips for guiding it to penetrate into the cannula; specifically, the ends of the tube-mounted blocking band can be set as oblique tips, and the oblique tips serve as guides for the blocking band to penetrate into the channel. That is, in a more preferred embodiment, the blocking band is a slender, flexible hollow tube with pointed ends. The tube diameter (outer diameter) of the blocking band is selected between 1 and 1.5 mm, for example, a 1 mm medical plastic tube can be selected.
[0039] The sleeve 1 is used as an operating component and locking component for tightening the blood vessel, and a medical plastic tube that meets certain hardness requirements and can be deformed (clamped or recanalized) can be used. In order to better tighten the blood vessel when pushing the sleeve, the aperture of the sleeve channel near the end of the blood vessel is as small as possible to better lock the blocking band. Therefore, the aperture of the channel is set to gradually shrink from the proximal end to the distal end; but at the same time, it is also necessary to fully consider the difficulty of operation when the blocking band is inserted, so its aperture cannot be too small. When the tube diameter (outer diameter) of the blocking band is selected between 1 and 1.5 mm, the aperture of one end (distal end) of the channel close to the blocking part of the blocking band is 3 to 4 mm. In a more specific example, when the tube diameter (outer diameter) of the blocking band is selected at 1 mm, the aperture of one end (distal end) of the channel close to the blocking part of the blocking band is 3 mm. The proximal aperture of the channel is convenient for the blocking band to extend and the first fixing clamp to clamp the sleeve to fix the blocking band. Under the above-mentioned size conditions, the proximal aperture can be set to 5 to 6 mm.
[0040] The length of the blocking band should be convenient for operation, usually set at 60~100cm; the length of the sleeve should be convenient for operation and locking, usually set at 4~6cm.
[0041] On the basis of solving the problem of blood vessel blocking, the problem of blood vessel bleeding point detection is further solved. Figure 6 and Figure 7 The blood vessel blocking assembly also includes a second fixing clamp 5, which is used to clamp the operating part of the blocking band 2; a gap for the sleeve to retreat is reserved between the clamping position of the second fixing clamp and the end of the sleeve. When detecting the bleeding state of the blood vessel, the second fixing clamp remains in the clamping state, the first fixing clamp is opened, the sleeve is slowly retreated, and the blood vessel is restored ( Figure 7 ), detect vascular bleeding. Under the condition that the occlusion band and cannula are of the same size as mentioned above, the cannula withdrawal gap is preferably 0.5~1.5cm.
[0042] After the first fixing clamp is released, the blocking band with a hollow tubular structure can slowly restore blood vessels due to its own recovery deformation, which is also more conducive to the detection of bleeding conditions.
[0043] The working process of a preferred embodiment of the present application is as follows (taking pulmonary artery vascular occlusion as an example):
[0044] Pulmonary artery occlusion: The occlusion band passes around the pulmonary artery and is inserted into the cannula and passes through the cannula, pulling the main trunk of the pulmonary artery. Then, the cannula is forced toward the pulmonary artery to make it lean against the pulmonary artery. The occlusion band clamps the pulmonary artery to deform it and block the blood flow in the pulmonary artery. After the blood flow is blocked, the first fixing clip is clamped on the cannula, the cannula and the occlusion band are locked at the same time, and then the second fixing clip is clamped at the part where the occlusion band passes through the cannula. The second fixing clip is clamped about 1 cm away from the end of the cannula to complete the occlusion of the pulmonary artery (see Figure 3 , Figure 4 and Figure 6 ).
[0045] Check whether the pulmonary artery is bleeding: first open the first fixation clamp, reopen the pulmonary artery, and observe whether there is bleeding in the pulmonary artery (see Figure 7 ).
[0046] 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.
[0047] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.
Claims
1. A blood vessel blocking component, characterized in that: include: a casing having a passage; The blocking band is a deformable flexible hollow tube, which is folded in half and movably inserted into the channel. It has a blocking portion extending out of the sleeve in a ring structure and an operating portion for pulling the blocking band to tighten the blood vessel.
2. The blood vessel blocking assembly according to claim 1, characterized in that: The diameter of the blocking tape is 1-1.5 mm.
3. The blood vessel blocking assembly according to claim 1, characterized in that: Both ends of the blocking band are provided with guide tips for guiding the blocking band to penetrate into the sleeve.
4. The blood vessel blocking assembly according to claim 1, characterized in that: It also includes a first fixing clamp, which is used to clamp and fix the sleeve and the blocking band to limit the relative movement between the two.
5. The blood vessel blocking assembly according to claim 4, characterized in that: The outer peripheral surface of the sleeve is provided with a clamping portion matched with the first fixing clamp.
6. The blood vessel blocking assembly according to claim 5, characterized in that: The clamping portion is an annular groove circumferentially surrounding the outer peripheral surface of the sleeve; the clamping portion is 1 to 2 cm away from the end of the sleeve close to the blocking band operation.
7. The blood vessel blocking assembly according to claim 1, characterized in that: The sleeve has a distal end and a proximal end opposite to each other, the distal end of the sleeve is pressed against the blood vessel, and the aperture of the channel is gradually reduced from the proximal end to the distal end.
8. The blood vessel blocking assembly according to claim 7, characterized in that: The distal end aperture of the channel is 3-4 mm, and the proximal end aperture is 5-6 mm.
9. The blood vessel blocking assembly according to claim 1, characterized in that: It also includes a second fixing clamp for clamping the operating portion of the blocking belt; a sleeve retreat gap is reserved between the clamping position of the second fixing clamp and the end of the sleeve.