Ultrasonic endoscope injection needle
By designing an ultrasonic endoscopic injection needle with a gradually decreasing inner diameter of the needle tube, the problem of needle blockage was solved, rapid unblocking was achieved, operation time was reduced, and medical costs and risks were reduced.
Patent Information
- Application Number
- CN202422115762.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-08-30
AI Technical Summary
Existing ultrasound endoscopic injection needles are prone to clogging when injecting tissue adhesives, resulting in prolonged surgery, increased risks and higher costs. In particular, when the middle of the needle tube is blocked, it is difficult to clear and the equipment needs to be replaced.
An ultrasonic endoscopic injection needle was designed. The needle tube consists of a needle tip, a connecting part and a fixing part. The needle tip has the smallest inner diameter and is used to block first to avoid blockage of the entire needle tube. Combined with the outer tube assembly and the core rod structure, it is convenient to clear blockage and reduce the dredging time.
It reduces the risk of blockage, shortens operation time, reduces medical expenses, avoids equipment replacement, and reduces surgical risks and operational complexity.
Smart Images
Figure CN223336177U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical instruments, in particular to an ultrasonic endoscopic injection needle. Background Art
[0002] Disposable endoscopes use ultrasonic endoscopes and soft endoscopes to diagnose and sample gastrointestinal mucosal and outer wall injuries. Tissue sampling is performed with a needle under ultrasound guidance. Sometimes, for varicose veins and venous bleeding, tissue adhesives are injected in conjunction with the endoscope to close the bleeding points.
[0003] However, when varicose vein lesions and venous bleeding are treated with endoscopy to inject tissue adhesive to close the bleeding point, the needle of the ultrasonic endoscope injection needle after the tissue gel injection often becomes clogged. If the bleeding point requires a second or multiple hemostasis operations, it takes a long time to clear the needle. However, when the blockage is located in the middle of the needle, it is more difficult to clear the blockage, and the ultrasonic suction biopsy needle used in the disposable endoscope needs to be replaced and the operation needs to be performed again, which increases the operation time, increases the surgical risk, and also increases the patient's treatment costs. Utility Model Content
[0004] The purpose of the present utility model is to provide an ultrasonic endoscopic injection needle to solve the problems existing in the above-mentioned prior art, reduce the risk of blockage, reduce the length of needle tube blockage, shorten the unblocking time, avoid replacing the ultrasonic endoscopic injection needle, shorten the operation time, and reduce medical costs.
[0005] To achieve the above purpose, the present invention provides the following solutions:
[0006] The utility model provides an ultrasonic endoscopic injection needle, comprising an outer tube assembly, a needle tube assembly and a core rod; the outer tube assembly is sleeved outside one end of the core rod and can move relative to the core rod along the axial direction of the core rod; the needle tube assembly comprises a needle tube and a rear handle fixedly connected to the needle tube, the rear handle is sleeved outside the other end of the core rod, and the needle tube can pass through the core rod and the outer tube assembly in sequence, the rear handle can move relative to the core rod along the axial direction of the core rod, the needle tube has a needle tip, a connecting part and a fixing part, the two ends of the connecting part are fixedly connected to the needle tip and the fixing part respectively, the needle tip is used to inject gel into the bleeding point, the fixing part is fixedly connected to the rear handle, the inner diameter of the needle tip is smaller than the inner diameter of the connecting part, and the inner diameter of the connecting part is smaller than the inner diameter of the fixing part.
[0007] Preferably, the inner diameter of the needle tip is 0.7 mm, the inner diameter of the connecting portion is 0.9 mm, and the inner diameter of the fixing portion is 1.3 mm.
[0008] Preferably, the length of the needle tip is 3-5 mm.
[0009] Preferably, the outer tube assembly includes an outer tube and a front handle fixedly connected to the outer tube, and the end of the front handle away from the outer tube is sleeved outside one end of the core rod, and the front handle and the outer tube can move relative to the core rod along the axial direction of the core rod.
[0010] Preferably, the outer side wall of the core rod has a limiting convex ring, the front handle is placed on one side of the limiting convex ring, and the rear handle is placed on the other side of the limiting convex ring.
[0011] Preferably, the outer side wall of the core rod is provided with a first scale and a second scale, and the first scale and the second scale are respectively placed on both sides of the limiting protruding ring.
[0012] Preferably, the outer tube assembly further comprises a locking member, and the locking member is used to limit the movement of the outer tube assembly relative to the core rod.
[0013] Preferably, the end of the rear handle away from the needle tube is provided with a Luer head for connecting to an injection device.
[0014] Compared with the prior art, the utility model has achieved the following technical effects:
[0015] The utility model provides an ultrasonic endoscopic injection needle, the needle tube comprises a needle tip, a connecting part and a fixing part, the inner diameter of the needle tip for injecting gel into the bleeding point is smaller than the inner diameter of the connecting part, the inner diameter of the connecting part is smaller than the inner diameter of the fixing part, the injected gel liquid is injected from the fixing part to the needle tip, if blockage occurs, the needle tip with the smallest inner diameter is blocked first, thereby avoiding blockage of the entire needle tube, the blocked part is shorter, and the needle tube is convenient to clean during surgery, which can shorten the operation time, reduce the operation risk, avoid replacing the ultrasonic endoscopic injection needle, and reduce medical expenses. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only 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.
[0017] Figure 1 This is a schematic diagram of the structure of the endoscopic ultrasound injection needle;
[0018] Figure 2 This is a schematic diagram of the structure of the needle tube of the ultrasonic aspiration biopsy needle.
[0019] In the figure: 1-needle tube; 11-needle tip; 12-connecting part; 13-fixing part; 2-outer tube; 3-front handle; 4-locking piece; 5-rear handle; 6-core rod; 7-Luer head; 8-injection device; 9-limiting protruding ring. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0021] The purpose of the present utility model is to provide an ultrasonic endoscopic injection needle to solve the problems existing in the above-mentioned prior art, reduce the risk of blockage, reduce the length of needle tube blockage, shorten the unblocking time, avoid replacing the ultrasonic endoscopic injection needle, shorten the operation time, and reduce medical expenses.
[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.
[0023] The utility model provides an ultrasonic endoscopic injection needle, such as Figure 1 As shown, it includes an outer tube assembly, a needle tube assembly and a core rod 6; the outer tube assembly is sleeved on one end of the core rod 6 and can move relative to the core rod 6 along the axial direction of the core rod 6; the needle tube assembly includes a needle tube 1 and a rear handle 5 fixedly connected to the needle tube 1, the rear handle 5 is sleeved on the other end of the core rod 6, and the needle tube 1 can pass through the core rod 6 and the outer tube assembly in sequence, and the rear handle 5 can move relative to the core rod 6 along the axial direction of the core rod 6 to adjust the puncture depth of the needle tube 1, as shown in FIG. Figure 2As shown, the needle tube 1 has a needle tip 11, a connecting portion 12 and a fixing portion 13. The two ends of the connecting portion 12 are fixedly connected to the needle tip 11 and the fixing portion 13 respectively. The needle tip 11 is used to inject gel into the bleeding point. The fixing portion 13 is fixedly connected to the rear handle 5. The inner diameter of the needle tip 11 is smaller than the inner diameter of the connecting portion 12, and the inner diameter of the connecting portion 12 is smaller than the inner diameter of the fixing portion 13. When using the ultrasonic endoscopic injection needle, the injection device 8 is connected to the Luer head 7, and the injected gel liquid is injected from the fixed part 13 to the needle tip 11. Since the inner diameter of the needle tip 11 is the smallest, when blockage occurs, the needle tip 11 is blocked first, thereby avoiding blockage of the entire needle tube 1. The blocked part is short, which is convenient for cleaning the needle tube 1 during surgery. There is no need to replace the ultrasonic endoscopic injection needle and repeatedly insert the endoscope to find the surgical site and then reconnect the supporting equipment. This greatly reduces the risk brought by the operation time, and also reduces the complexity and fatigue of the medical staff's operation, which can shorten the operation time, reduce the operation risk, and more likely help patients reduce medical expenses.
[0024] In the embodiment of the present invention, it is further preferred that the inner diameter of the needle tip portion 11 is 0.7 mm, the inner diameter of the connecting portion 12 is 0.9 mm, and the inner diameter of the fixing portion 13 is 1.3 mm.
[0025] In the embodiment of the present invention, it is further preferred that the length of the needle tip 11 is 3-5 mm. The length of the dredging section is relatively short, which can ensure puncture of the tissue and reduce the length of the blockage.
[0026] It is further preferred in the embodiment of the present invention that the outer tube assembly includes an outer tube 2 and a front handle 3 fixedly connected to the outer tube 2, and the end of the front handle 3 away from the outer tube 2 is sleeved on the outside of one end of the core rod 6, and the front handle 3 and the outer tube 2 can move relative to the core rod 6 along the axial direction of the core rod 6.
[0027] In an embodiment of the present invention, it is further preferred that the outer wall of the core rod 6 has a limiting protrusion 9, the front handle 3 is placed on one side of the limiting protrusion 9, and the rear handle 5 is placed on the other side of the limiting protrusion 9. The outer wall of the core rod 6 is provided with a first scale and a second scale, respectively placed on either side of the limiting protrusion 9. During surgery, the front handle 3 and the rear handle 5 can adjust the length of the needle tube 1 according to the scales.
[0028] In a further preferred embodiment of the present invention, the outer tube assembly further comprises a locking member 4. The first locking member 4 is used to restrict movement of the outer tube assembly 2 relative to the core rod 6. Locking by the locking member 4 ensures that the needle withdrawal length is controlled during multiple punctures. Preferably, the locking member 4 is a tightening nut.
[0029] In the embodiment of the present invention, it is further preferred that a Luer head 7 for connecting to an injection device 8 is provided at one end of the rear handle 5 away from the needle tube 1 .
[0030] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.
Claims
1. An endoscopic ultrasound injection needle, characterized in that: The needle tube assembly comprises an outer tube assembly, a needle tube assembly and a core rod; the outer tube assembly is sleeved outside one end of the core rod and can move relative to the core rod along the axial direction of the core rod; the needle tube assembly comprises a needle tube and a rear handle fixedly connected to the needle tube, the rear handle is sleeved outside the other end of the core rod, and the needle tube can pass through the core rod and the outer tube assembly in sequence, and the rear handle can move relative to the core rod along the axial direction of the core rod, the needle tube has a needle tip, a connecting part and a fixing part, the two ends of the connecting part are fixedly connected to the needle tip and the fixing part respectively, the needle tip is used to inject gel into the bleeding point, the fixing part is fixedly connected to the rear handle, the inner diameter of the needle tip is smaller than the inner diameter of the connecting part, and the inner diameter of the connecting part is smaller than the inner diameter of the fixing part, the outer tube assembly comprises an outer tube and a front handle fixedly connected to the outer tube, the end of the front handle away from the outer tube is sleeved outside one end of the core rod, and the front handle and the outer tube can move relative to the core rod along the axial direction of the core rod.
2. The ultrasonic endoscopic injection needle according to claim 1, characterized in that: The inner diameter of the needle tip is 0.7 mm, the inner diameter of the connecting portion is 0.9 mm, and the inner diameter of the fixing portion is 1.3 mm.
3. The ultrasonic endoscopic injection needle according to claim 1, characterized in that: The length of the needle tip is 3-5 mm.
4. The ultrasonic endoscopic injection needle according to claim 1, characterized in that: The outer side wall of the core rod is provided with a limiting convex ring, the front handle is placed on one side of the limiting convex ring, and the rear handle is placed on the other side of the limiting convex ring.
5. The ultrasonic endoscopic injection needle according to claim 4, characterized in that: The outer side wall of the core rod is provided with a first scale and a second scale, and the first scale and the second scale are respectively placed on both sides of the limiting protruding ring.
6. The ultrasonic endoscopic injection needle according to claim 1, characterized in that: The outer tube assembly further includes a locking member, which is used to limit the movement of the outer tube assembly relative to the core rod.
7. The ultrasonic endoscopic injection needle according to claim 1, characterized in that: The end of the rear handle away from the needle tube is provided with a Luer head for connecting to an injection device.