Blood vessel exhaust needle for cardiac surgery
By designing a blood vessel exhaust needle for cardiac surgery, the adjustment cannula contacts with the outer wall of the blood vessel to form a stop limit, the problem of the vascular puncture needle being prone to secondary puncture is solved, and a safe and smooth exhaust effect is achieved.
Patent Information
- Application Number
- CN202422253677.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-09-13
AI Technical Summary
In the prior art, the vascular puncture needle is prone to be inserted into the blood vessels twice during the exhaust process, resulting in scratching the endometrium of the blood vessel or puncture the posterior wall of the blood vessels, and poor exhaust gas.
A blood vessel exhaust needle for cardiac surgery is designed, including an exhaust needle body and an adjustment sleeve. The tip and tail of the exhaust needle body are provided with a through-opening air hole. One end of the adjustment sleeve has a liquid discharge port and a socket at the other end. The exhaust needle body is inserted into the socket and retractable. The end of the adjustment sleeve contacts the outer wall of the blood vessel to form a stop limit to prevent too deep penetration.
It effectively prevents the exhaust needle from punctured too deeply, avoids blood vessel damage, and ensures the smoothness and safety of exhaust operation.
Smart Images
Figure CN223262992U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of exhaust needles, in particular to a blood vessel exhaust needle for cardiac surgery. Background Art
[0002] Artificial vascular replacement surgery involves removing diseased blood vessels and replacing them with artificial ones. This procedure is primarily used to treat various types of arterial diseases, such as occlusive or dilatative arterial disease. Coronary artery bypass grafting (CABG), commonly known as coronary artery bypass grafting, is a surgical procedure for treating atherosclerotic coronary heart disease. The principle of CABG is to use autologous blood vessels (such as the internal mammary artery, radial artery, right gastroepiploic artery, and great saphenous vein) to create a bypass ("bridge") between the aorta and the diseased coronary artery. This allows blood in the aorta to bypass the narrowed area and flow directly to the distal end of the stenosis, thereby restoring myocardial blood supply.
[0003] During both surgeries, it is necessary to promptly expel residual gas from the blood vessels to avoid air embolism and other problems such as stroke. The currently commonly used method is to insert a 1ml or 5ml vascular puncture needle into the highest point of the artificial blood vessel and venous graft to vent air. Since the blood vessels are irregularly arranged according to the position of the heart, it is also necessary to gently shake the blood vessels and the heart to expel some air retained in hidden and complex parts. Since the insertion depth of the vascular puncture needle cannot be fixed, it is easy for the vascular puncture needle to penetrate the blood vessel a second time when the blood vessel is gently shaken. If the needle is inserted too deep, it is easy for the needle tip to scratch the vascular endothelium or pierce the back wall of the blood vessel to damage other heart tissues in the blood vessel cavity. It is also easy to cause the needle hole to be blocked, resulting in poor exhaust. Utility Model Content
[0004] In view of this, it is necessary to provide a blood vessel venting needle for cardiac surgery to solve the technical problem in the prior art that the blood vessel puncture needle is prone to secondary penetration into the blood vessel during the venting process.
[0005] The technical solution adopted by the utility model to solve its technical problems is:
[0006] A vascular exhaust needle for cardiac surgery comprises an exhaust needle body and an adjusting sleeve, wherein the tip and tail of the exhaust needle body are provided with exhaust holes that penetrate each other, one end of the adjusting sleeve is provided with a drainage port, and the other end of the adjusting sleeve is provided with a socket for inserting the exhaust needle body, the socket being connected to the drainage port, the tail of the exhaust needle body being inserted into the socket and being able to extend and retract along the socket toward the drainage port of the adjusting sleeve to adjust the length of the exhaust needle body extending out of the adjusting sleeve.
[0007] Preferably, a plurality of through holes communicating with the exhaust hole are provided on the outer side wall of the exhaust needle body near the tip thereof, and the through holes are provided at intervals along the length direction of the exhaust needle body.
[0008] Preferably, the outer wall of the exhaust needle body is in airtight contact with the inner wall of the insertion hole. After the exhaust needle body is retracted into the regulating sleeve, the through hole on the outer wall of the exhaust needle body can be blocked by the inner wall of the insertion hole.
[0009] Preferably, an adjustment groove is provided on the outer side wall of the adjustment sleeve along its length direction, and the adjustment groove is connected to the insertion hole. A push handle is laterally provided on the outer side wall of the exhaust needle body near the tail, and the push handle passes through the adjustment groove and is exposed on the outer side wall of the adjustment sleeve. Pushing the push handle can drive the exhaust needle body to extend and retract along the insertion hole to adjust the length of the exhaust needle body extending out of the adjustment sleeve.
[0010] Preferably, a matching catheter is plugged into the drain port of the regulating sleeve.
[0011] Preferably, the adjusting sleeve is a transparent tube.
[0012] As can be seen from the above technical solution, the vascular venting needle for cardiac surgery provided by the present application includes a venting needle body and an adjusting sleeve. The tip and tail of the venting needle body are provided with mutually interpenetrating venting holes. One end of the adjusting sleeve is provided with a drainage port. The other end of the adjusting sleeve is provided with a socket for inserting the venting needle body. The socket is connected to the drainage port. The tail of the venting needle body is inserted into the socket and can be extended and retracted along the socket toward the drainage port of the adjusting sleeve to adjust the length of the venting needle body extending out of the adjusting sleeve. After the tip of the venting needle body pierces the blood vessel to be vented, the end of the adjusting sleeve contacts and blocks the outer wall of the blood vessel. The end of the adjusting sleeve forms a stop for the venting needle body, which can prevent the venting needle body from piercing too deep and avoid the vascular puncture needle from piercing the blood vessel again. This prevents the needle tip from scratching the blood vessel endothelium or piercing the back wall of the blood vessel and damaging other cardiac tissue, and makes the venting operation more convenient and smooth. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a perspective structural diagram of the utility model.
[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model.
[0015] Figure 3 This is a schematic structural diagram from another angle of the utility model.
[0016] Figure 4 Schematic diagram of the structure of the exhaust needle body.
[0017] Figure 5Schematic diagram of the structure of the adjusting sleeve.
[0018] Figure 6 It is a schematic diagram of the assembly structure of the regulating sleeve and the exhaust needle body.
[0019] In the figure: exhaust needle body 10, exhaust hole 11, through hole 12, push handle 13, adjustment sleeve 20, drain port 21, insertion hole 22, adjustment groove 23, and catheter 30. DETAILED DESCRIPTION
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0021] Please see Figure 1 、 Figure 4 and Figure 5The embodiment of the utility model provides a vascular exhaust needle for cardiac surgery, an exhaust needle body 10 and an adjusting sleeve 20, the tip and tail of the exhaust needle body 10 are provided with exhaust holes 11 that penetrate each other, one end of the adjusting sleeve 20 is provided with a drain port 21, the drain port 21 is used to connect a catheter 30, and an external blood recovery machine or an extracorporeal circulation machine is connected through the catheter 30, the drain port 21 and the catheter 30 are pluggable, and a socket 22 for inserting the exhaust needle body 10 is provided at the other end of the adjusting sleeve 20, the socket 22 is connected to the drain port 21, the tail of the exhaust needle body 10 is inserted into the socket 22, and can be extended and retracted along the socket 22 toward the drain port 21 of the adjusting sleeve 20 to adjust the length of the exhaust needle body 10 extending out of the adjusting sleeve 20. The inner wall of the socket 22 of the adjusting sleeve 20 is a silicone layer. After the exhaust needle body 10 is inserted into the socket 22, the outer wall of the exhaust needle body 10 is in airtight contact with the inner wall of the socket 22. The silicone layer is used to tightly clamp the exhaust needle body 10 in the socket 22, providing resistance for the exhaust needle body 10, preventing the exhaust needle body 10 from shrinking into the adjusting sleeve 20 when piercing the blood vessel, and playing a sealing role. When in use, the doctor can clamp the exhaust needle body 10 with surgical forceps and pull it out according to the situation of the blood vessel to be vented, and adjust the length of the exhaust needle body 10 extending out of the end of the adjusting sleeve 20. After the tip of the exhaust needle body 10 pierces the blood vessel to be vented, the end of the adjusting sleeve 20 contacts the outer wall of the blood vessel and blocks the outer wall of the blood vessel. The end of the adjusting sleeve 20 is used to form a stop and limit for the exhaust needle body 10, which can prevent the exhaust needle body 10 from piercing too deep. After the tip of the exhaust needle 10 penetrates the blood vessel to be exhausted, the blood and air in the blood vessel will flow along the exhaust hole 11 of the exhaust needle 10 to the drain port 21 of the regulating sleeve 20, and be discharged from the catheter 30 connected to the drain port 21 into an external blood recovery machine or extracorporeal circulation machine.
[0022] It should be noted that the silicone layer in the socket 22 is in close contact with the exhaust needle body 10, which plays a clamping role on the exhaust needle body 10 and can provide resistance for the exhaust needle body 10. The resistance is greater than the force when the exhaust needle body 10 penetrates the blood vessel, which can prevent the exhaust needle body 10 from shrinking into the adjustment sleeve 20 when penetrating the blood vessel.
[0023] Please see Figure 3 and Figure 4Furthermore, in order to make the exhaust of the tip of the exhaust needle body 10 smoother, a plurality of through holes 12 connected to the exhaust hole 11 are opened on the outer wall of the exhaust needle body 10 near the tip thereof, and the through holes 12 are spaced apart along the length direction of the exhaust needle body 10. When the exhaust needle body 10 is retracted into the adjusting sleeve 20, part of the through holes 12 on the outer wall of the exhaust needle body 10 can be hidden in the insertion hole 22 and blocked by the inner wall of the insertion hole 22. When the exhaust needle body 10 is used by extending the end of the adjusting sleeve 20, it should be ensured that at least one through hole 12 is exposed on the outside of the end of the adjusting sleeve 20. After the tip of the exhaust needle body 10 pierces the blood vessel to be exhausted, the through hole 12 near the tip will also enter the blood vessel. Due to the height difference between the through hole 12 and the tip of the exhaust needle body 10, the through hole 12 is closer to the top of the inner wall of the blood vessel, which is conducive to the air in the blood vessel being discharged from the through hole 12 into the exhaust hole 11.
[0024] Please see Figure 2 and Figure 5 Furthermore, in order to facilitate the adjustment of the length of the exhaust needle body 10, an adjustment groove 23 is provided on the outer wall of the adjusting sleeve 20 along its length direction, and the adjustment groove 23 is connected to the insertion hole 22. A push handle 13 is horizontally provided on the outer wall of the exhaust needle body 10 near the tail, and one end of the push handle 13 is fixed to the exhaust needle body 10 by melt welding or sleeve connection, and the other end of the push handle 13 passes through the adjustment groove 23 and is exposed on the outer wall of the adjusting sleeve 20. By pushing the push handle 13, the exhaust needle body 10 can be driven to extend and retract along the insertion hole 22 to adjust the length of the exhaust needle body 10 extending out of the adjusting sleeve 20. The setting of the push handle 13 can also play the role of fixing the exhaust needle body 10. When in use, the exhaust needle body 10 can be fixed by pressing the push handle 13 with your fingers to prevent the exhaust needle body 10 from shrinking into the adjusting sleeve 20 when piercing the blood vessel. During production, if Figure 6 The adjusting sleeve 20 is designed in two halves to facilitate insertion of the exhaust needle 10 with the push handle 13 into the insertion hole 22 and to allow the push handle 13 to be positioned in the adjusting groove 23. After the two halves of the adjusting sleeve 20 are closed, they are melt-welded or glued together to tightly clamp the exhaust needle 10, providing resistance to the exhaust needle 10 and preventing it from sliding freely within the adjusting sleeve 20.
[0025] Furthermore, the adjusting sleeve 20 is preferably a transparent tube, and the exhaust needle 10 in the insertion hole 22 can be observed through the adjusting sleeve 20 .
[0026] When the vascular venting needle is in use, the doctor can clamp the venting needle body 10 with surgical forceps and pull it out by himself to adjust the length of the venting needle body 10 extending out of the end of the adjusting sleeve 20. The doctor can also manually push the push handle 13 to adjust the length of the venting needle body 10 extending out of the end of the adjusting sleeve 20. The doctor can adjust the length of the venting needle body 10 extending out of the end of the adjusting sleeve 20 according to the condition of the blood vessel, the position of the puncture, and the puncture angle. When puncturing the blood vessel to be vented, the doctor can press the push handle 13 with his fingers to fix the venting needle body 10 to prevent the venting needle body 10 from shrinking into the adjusting sleeve 20 when puncturing the blood vessel. In addition, the adjusting sleeve 20 can be used to limit the puncture length of the venting needle body 10 to prevent the venting needle body 10 from piercing too deep.
[0027] The above disclosure is only a preferred embodiment of the present invention, and it is certainly not intended to limit the scope of the rights of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the present invention.
Claims
1. A vascular venting needle for cardiac surgery, characterized by: It includes an exhaust needle body and an adjusting sleeve, wherein the tip and tail of the exhaust needle body are provided with exhaust holes that penetrate each other, one end of the adjusting sleeve is provided with a drainage port, and the other end of the adjusting sleeve is provided with a socket for inserting the exhaust needle body, the socket is connected to the drainage port, the tail of the exhaust needle body is inserted into the socket, and can be extended and retracted along the socket toward the drainage port of the adjusting sleeve to adjust the length of the exhaust needle body extending out of the adjusting sleeve.
2. The vascular venting needle for cardiac surgery according to claim 1, wherein: A plurality of through holes communicating with the exhaust hole are provided on the outer side wall of the exhaust needle body near the tip thereof, and the through holes are spaced apart along the length direction of the exhaust needle body.
3. The vascular venting needle for cardiac surgery according to claim 2, wherein: The outer wall of the exhaust needle body is in airtight contact with the inner wall of the insertion hole. After the exhaust needle body is retracted into the regulating sleeve, the through hole on the outer wall of the exhaust needle body can be blocked by the inner wall of the insertion hole.
4. The vascular venting needle for cardiac surgery according to claim 3, wherein: An adjustment groove is provided on the outer side wall of the adjustment sleeve along its length direction, and the adjustment groove is connected to the insertion hole. A push handle is laterally provided on the outer side wall of the exhaust needle body near the tail, and the push handle passes through the adjustment groove and is exposed on the outer side wall of the adjustment sleeve. Pushing the push handle can drive the exhaust needle body to extend and retract along the insertion hole to adjust the length of the exhaust needle body extending out of the adjustment sleeve.
5. The vascular venting needle for cardiac surgery according to claim 4, characterized in that: The drain port of the regulating sleeve is plugged with a matching conduit.
6. The vascular venting needle for cardiac surgery according to claim 5, characterized in that: The adjusting sleeve is a transparent tube.