Cell needle knife with medicine channel
By designing a cell needle knife with a drug delivery channel, and using a combination of external and internal injection needles, the problem of simultaneous drug delivery by existing needle knives is solved, enabling precise and rapid drug injection and batch delivery, thus improving surgical efficiency and patient treatment outcomes.
Patent Information
- Application Number
- CN202511659885.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-13
- Publication Date
- 2025-12-12
AI Technical Summary
Existing needle knives are difficult to inject medication simultaneously during cutting, requiring secondary injection, which is cumbersome and difficult to inject accurately, affecting the rapid action of the medication.
A cell needle knife with a drug channel was designed, comprising an external injection needle and an internal injection needle. It achieves precise and rapid drug injection through injection components and limiting components. Utilizing the design of the cutting blade and the liquid outlet groove, combined with the internal separator ring and limiting rubber column, it achieves precise batch delivery of drugs.
It enables precise and rapid drug injection, simplifies the operation process, improves surgical efficiency, ensures that drugs can quickly reach the patient's site, reduces secondary damage, supports the batch injection of multiple drugs, and improves the efficiency of minimally invasive surgery.
Smart Images
Figure CN121101700A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of needle knives, in particular to a cell needle knife with a medicine channel. BACKGROUND
[0002] The needle knife is a tool for closed release operation between surgical methods and non-surgical therapy, is formed on the basis of the incision surgical method in combination with the acupuncture method, and has the characteristics that the needle knife is lightly cut and peeled off harmful tissues at the lesion in the treatment position, so that the purpose of relieving pain and curing diseases is achieved, the needle knife is mainly used for soft tissue injury and bone joint diseases, and has the advantages of simple operation, small incision and small damage to human tissues. However, the existing needle knife cannot add medicine during cutting, so that the medicine needs to be added to the injured position again, the steps are complicated, and the medicine cannot be accurately added to the position cut by the needle knife, so that the medicine cannot quickly act. SUMMARY
[0003] The application provides a cell needle knife with a medicine channel, which can effectively solve the problem that the existing needle knife cannot add medicine during cutting, so that the medicine needs to be added to the injured position again, the steps are complicated, and the medicine cannot be accurately added to the position cut by the needle knife, so that the medicine cannot quickly act.
[0004] To achieve the above object, the application provides the following technical scheme: a cell needle knife with a medicine channel, comprising an external injection needle tube, and an injection assembly is arranged on the inner side of the external injection needle tube. The injection assembly comprises a cutting edge. The bottom end of the external injection needle tube is connected with the cutting edge, the inner side of the cutting edge is provided with a liquid outlet groove, the top end of the external injection needle tube is externally sleeved with a holding handle, the inner side of the bottom of the external injection needle tube is provided with a distribution chamber, the inner side of the distribution chamber is embedded with a separation ring, and the separation ring and the external injection needle tube form a storage chamber. The inner side of the separation ring is provided with a clamping groove, the inner side of the clamping groove is slidably provided with a limiting rubber column, the top end of the limiting rubber column is connected with a connecting pipe, the outer side of the bottom of the limiting rubber column is provided with a discharging hole, the bottom end of the limiting rubber column is connected with a pushing rubber, the outer side of the connecting pipe is sleeved with an internal injection needle tube, the top end of the internal injection needle tube is connected with a connecting barrel, and the inner side of the connecting barrel is provided with a needle tube connecting groove.
[0005] Preferably, the liquid outlet groove is provided with two, two liquid outlet grooves are symmetrically provided at the bottom of the cutting edge, and the liquid outlet groove is communicated with the distribution chamber.
[0006] Preferably, the discharge hole is provided with three, three discharge holes are provided at the outer side of the limiting rubber column.
[0007] Preferably, the outer diameter of the separation ring is equal to the inner diameter of the outer injection needle tube, and the outer diameter of the limiting rubber column is equal to the inner diameter of the clamping groove.
[0008] Preferably, the inner side of the holding handle is provided with a mounting groove at the corresponding position of the outer injection needle tube, and the outer injection needle tube is connected with the holding handle through the mounting groove.
[0009] Preferably, the outer diameter of the connecting pipe is equal to the inner diameter of the inner injection needle tube, and the inner injection needle tube is communicated with the discharge hole through the connecting pipe.
[0010] Preferably, the inner side of the needle pipe connecting groove is a rough curved surface, and the needle pipe connecting groove is communicated with the inner injection needle tube.
[0011] Preferably, the top end of the outer injection needle tube is provided with a limiting assembly; The limiting assembly comprises a filling funnel; The top end of the outer injection needle tube is welded with a filling funnel, the inner side of the filling funnel is provided with a filling chamber, the outer side of the top of the filling funnel is threadedly connected with a threaded ring, the top end of the threaded ring is welded with a sealing plate, the inner side of the sealing plate is provided with a sliding groove at the middle position, the top end of the sealing plate is spot-welded with a limiting spring, the outer side of the inner injection needle tube is sleeved with a limiting plate, the top end of the sealing plate is welded with a fixed column, the inner side of the limiting plate is provided with a positioning groove, and the inner side of the limiting plate is provided with a welding groove at the middle position.
[0012] Preferably, the inner diameter of the threaded ring is equal to the outer diameter of the filling funnel, and the filling chamber is communicated with the storage chamber.
[0013] Preferably, the inner diameter of the sliding groove is equal to the outer diameter of the inner injection needle tube, and the inner diameter of the positioning groove is twice that of the fixed column.
[0014] Compared with the prior art, the present application has the advantages of scientific and reasonable structure, safe and convenient use: 1、Set up with injection assembly, by setting up inside injection needle tube in the outside injection needle tube, utilize the cutting blade of front position to insert to the diseased place, through the cutting blade to the diseased place is loosed and is handled, through the outside injector to inject physiological saline to the diseased place, so can accurate and fast to the diseased place is flushed, the rotten tissue is flushed clean, if need injects medicine can replace physiological saline with medicine, so that accurate to the diseased place is handled with medicine injection, not only simple and convenient, and further guarantee the accuracy of medicine injection, improve the operation efficiency, and when needing multiple medicine batch injection, batch fast accurate to the diseased place is handled with medicine injection, can simultaneously carry out the accurate injection of multiple medicine and further improve the operation efficiency.
[0015] 2、Set up with limiting assembly, when the first kind of medicine injection, fixed column will limit the position of limiting rubber column, so that the end of limiting rubber column will always be stuck in the inside of clamping groove, through connecting cylinder fast the medicine is delivered to the diseased place, when different medicine batch injection, the positioning groove is rotated to the same side of fixed column, limiting rubber column can be completely pushed out of the separation ring, so that the storage chamber is communicated with the material separation chamber, the subsequent batch of medicine injection can be carried out, and multiple batches of medicine injection can be carried out through one minimally invasive surgery, and the patient's pain can be relieved as soon as possible. BRIEF DESCRIPTION OF DRAWINGS
[0016] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of the specification, which together with the embodiments of the application, are used to explain the application, and do not constitute a limitation on the application.
[0017] In the drawings: Figure 1 is a structural schematic diagram of the application; Figure 2 is a schematic diagram of the installation structure of the holding handle of the application; Figure 3 is a schematic diagram of the installation structure of the inside injection needle tube of the application; Figure 4 is a schematic diagram of the structure of the injection assembly of the application; Figure 5 is a schematic diagram of the installation structure of the connecting cylinder of the application; Figure 6 is a schematic diagram of the structure of the limiting assembly of the application; Marked in the drawing: 1, outside injection needle tube; 2, injection assembly; 201, cutting blade; 202, liquid outlet groove; 203, holding handle; 204, material separation chamber; 205, separation ring; 206, storage chamber; 207, clamping groove; 208, limiting rubber column; 209, connecting pipe; 210, discharge hole; 211, pushing rubber; 212, inside injection needle tube; 213, connecting cylinder; 214, needle tube connecting groove; 3. Limiting assembly; 301. Filling funnel; 302. Filling chamber; 303. Threaded ring; 304. Sealing plate; 305. Sliding groove; 306. Restricting spring; 307. Restricting plate; 308. Fixing post; 309. Positioning groove; 310. Welding groove. Detailed Implementation
[0018] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0019] Example: Figures 1-6 As shown, the present invention provides a technical solution, a cell needle knife with a drug channel, including an external injection needle tube 1, and an injection component 2 installed on the inner side of the external injection needle tube 1; The injection assembly 2 includes a cutting blade 201, a liquid outlet groove 202, a grip 203, a dispensing chamber 204, a separating ring 205, a storage chamber 206, a snap-fit groove 207, a limiting rubber post 208, a connecting tube 209, a discharge hole 210, a pushing rubber 211, an inner injection needle tube 212, a connecting cylinder 213, and a needle tube connecting groove 214; The bottom end of the external injection needle tube 1 is connected to a cutting blade 201. Two outlet grooves 202 are provided on the inner side of the cutting blade 201, symmetrically located at the bottom of the cutting blade 201. The outlet grooves 202 are connected to the dispensing chamber 204 for convenient drug flow. A handle 203 is sleeved on the outer side of the top end of the external injection needle tube 1. A safety device is provided on the inner side of the handle 203 at a position corresponding to that of the external injection needle tube 1. The external injection needle tube 1 is connected to the handle 203 through the mounting groove for easy operation. A dispensing chamber 204 is opened at the bottom inner side of the external injection needle tube 1. A separating ring 205 is embedded in the inner side of the dispensing chamber 204. The outer diameter of the separating ring 205 is equal to the inner diameter of the external injection needle tube 1. The outer diameter of the limiting rubber column 208 is equal to the inner diameter of the snap-fit groove 207, which is conducive to sealing. The separating ring 205 and the external injection needle tube 1 form a storage chamber 206. A retaining groove 207 is provided on the inner side of the separating ring 205. A limiting rubber post 208 is slidably installed on the inner side of the retaining groove 207. A connecting pipe 209 is connected to the top of the limiting rubber post 208. A discharge hole 210 is provided at the bottom outer side of the limiting rubber post 208. There are three discharge holes 210, which are equally angled at the outer side of the limiting rubber post 208 to facilitate uniform injection. A pushing rubber 211 is connected to the bottom end of the limiting rubber post 208. An inner injection needle tube 212 is sleeved on the outer side of the connecting tube 209. The outer diameter of the connecting tube 209 is equal to the inner diameter of the inner injection needle tube 212. The inner injection needle tube 212 is connected to the discharge hole 210 through the connecting tube 209, which facilitates drug flow. A connecting cylinder 213 is connected to the top of the inner injection needle tube 212. A needle tube connecting groove 214 is opened on the inner side of the connecting cylinder 213. The inner side of the needle tube connecting groove 214 is a rough curved surface. The needle tube connecting groove 214 is connected to the inner injection needle tube 212 to prevent it from falling off.
[0020] A limiting component 3 is installed at the top of the external injection needle tube 1; The limiting component 3 includes a filling funnel 301, a filling chamber 302, a threaded ring 303, a sealing plate 304, a sliding groove 305, a limiting spring 306, a limiting plate 307, a fixing post 308, a positioning groove 309, and a welding groove 310. The top of the external injection needle tube 1 is welded with an injection funnel 301. An injection chamber 302 is formed on the inner side of the injection funnel 301. A threaded ring 303 is threadedly connected to the top of the outer side of the injection funnel 301. The inner diameter of the threaded ring 303 is equal to the outer diameter of the injection funnel 301. The injection chamber 302 is connected to the storage chamber 206 for convenient storage of drugs. A sealing plate 304 is welded to the top of the threaded ring 303. A sliding groove 3 is formed in the middle of the inner side of the sealing plate 304. 05. A limiting spring 306 is spot-welded to the top of the sealing plate 304. A limiting plate 307 is sleeved on the outside of the inner injection needle tube 212. A fixing post 308 is welded to the top of the sealing plate 304. A positioning groove 309 is opened on the inner side of the limiting plate 307. The inner diameter of the sliding groove 305 is equal to the outer diameter of the inner injection needle tube 212. The inner diameter of the positioning groove 309 is twice that of the fixing post 308, which is conducive to limiting the position. A welding groove 310 is opened at the middle position of the inner side of the limiting plate 307.
[0021] The working principle and usage process of this invention are as follows: First, when medical staff perform minimally invasive surgery on patients, they insert the external injection needle 1 into the affected area using the front cutting blade 201. At this time, the affected area can be loosened and treated by the cutting blade 201. Depending on the patient's actual situation, if the affected area needs to be rinsed with saline, the external syringe is connected to the internal injection needle 212 through the connecting tube 213. Subsequently, the medical staff pushed the internal injection needle tube 212 downward, thereby moving the connecting tube 209 downward. Then, the connecting tube 209 moved the limiting rubber column 208 downward. Subsequently, the limiting rubber column 208 separated from the separating ring 205, thereby releasing the position restriction of the clamping groove 207 on the discharge hole 210. At this time, the connecting tube 209 will be connected to the dispensing chamber 204 through the discharge hole 210. However, due to the action of the fixing column 308, the end of the limiting rubber column 208 is still clamped inside the clamping groove 207. At this time, it can be ensured that the storage chamber 206 will not be connected to the dispensing chamber 204. Next, medical staff can inject saline solution into the affected area using an external syringe, which can accurately and quickly flush the affected area and clean away the necrotic tissue. If medication needs to be injected into the affected area, the limiting plate 307 can be rotated. When the positioning groove 309 coincides with the fixing column 308, the inner injection needle tube 212 is pushed. At this time, the limiting rubber column 208 will be completely pushed out of the locking groove 207, thereby connecting the storage chamber 206 and the dispensing chamber 204. Then, the medication stored inside the storage chamber 206 will flow from the locking groove 207 to the inside of the dispensing chamber 204, and then flow precisely to the affected area through the liquid outlet 202 at the bottom of the dispensing chamber 204, thereby quickly taking effect and relieving pain. By setting an inner injection needle 212 inside the outer injection needle 1, the front cutting blade 201 is inserted into the diseased area. The cutting blade 201 is used to loosen and treat the diseased area. Physiological saline is injected into the diseased area through an external syringe, which can accurately and quickly flush the diseased area and clean the necrotic tissue. If medication is needed, the physiological saline can be replaced with medication, so as to accurately inject medication into the diseased area. Not only is the procedure simple and convenient, but it also further ensures the accuracy of medication injection and improves surgical efficiency. When multiple medications need to be injected in batches, they can be stored inside the storage chamber 206. When needed, simply push down the limiting rubber column 208 to complete the injection. The medication is injected into the diseased area quickly and accurately in batches, reducing the harm of secondary injections and further relieving the patient's pain. The simultaneous and accurate injection of multiple medications further improves surgical efficiency. Finally, during the drug injection process, different drugs need to be injected in batches. When injecting the first drug, the operator rotates the positioning groove 309 and the fixing column 308 to opposite directions. At this time, the fixing column 308 will restrict the position of the limiting rubber column 208, so that the end of the limiting rubber column 208 will always be stuck inside the snap-fit groove 207. The discharge hole 210 is at the bottom of the limiting rubber column 208, so the drug can be quickly delivered to the diseased area through the connecting tube 213. After the injection is completed, the limiting plate 307 will quickly reset under the action of the limiting spring 306, thereby stopping the injection. When different medications need to be injected in batches, before the operation, medical staff unscrew the threaded ring 303 from the outside of the filling funnel 301, and then inject the medication through the filling chamber 302 into the inside of the dispensing chamber 204. When injection is needed, the positioning groove 309 is rotated to the same side as the fixing column 308. At this time, the limiting plate 307 can be pressed down to completely push the limiting rubber column 208 out of the separating ring 205, thereby connecting the storage chamber 206 and the dispensing chamber 204, allowing subsequent batches of medication to be injected. This allows multiple batches of medication to be injected in one minimally invasive surgery, thereby relieving the patient's pain as quickly as possible and providing timely drug treatment. It also ensures that all medications can accurately reach the affected area, further improving the efficiency of minimally invasive surgery.
[0022] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A cell needle knife with a drug delivery channel, comprising an external injection needle (1), characterized in that: An injection assembly (2) is installed on the inner side of the external injection needle (1). The injection assembly (2) includes a cutting blade (201); The bottom end of the external injection needle tube (1) is connected to a cutting blade (201), and a liquid outlet groove (202) is opened on the inner side of the cutting blade (201). A handle (203) is sleeved on the outer side of the top end of the external injection needle tube (1). A dispensing chamber (204) is opened at the bottom of the inner side of the external injection needle tube (1). A separating ring (205) is embedded in the inner side of the dispensing chamber (204). The separating ring (205) and the external injection needle tube (1) form a storage chamber (206). The inner side of the separator ring (205) is provided with a snap-fit groove (207), and a limiting rubber column (208) is slidably installed on the inner side of the snap-fit groove (207). The top end of the limiting rubber column (208) is connected to a connecting pipe (209). A discharge hole (210) is provided at the bottom of the outer side of the limiting rubber column (208). A pushing rubber (211) is connected to the bottom end of the limiting rubber column (208). An inner injection needle tube (212) is sleeved on the outer side of the connecting pipe (209). A connecting cylinder (213) is connected to the top end of the inner injection needle tube (212). A needle tube connecting groove (214) is provided on the inner side of the connecting cylinder (213).
2. The cell needle knife with drug delivery channel according to claim 1, characterized in that: Two liquid outlet channels (202) are provided, and the two liquid outlet channels (202) are symmetrically provided at the bottom of the cutting blade (201). The liquid outlet channels (202) are connected to the material distribution chamber (204).
3. The cell needle knife with drug delivery channel according to claim 1, characterized in that: The discharge hole (210) is provided in three parts, and the three discharge holes (210) are opened at equal angles on the outer side of the limiting rubber post (208).
4. The cell needle knife with drug delivery channel according to claim 1, characterized in that: The outer diameter of the separator ring (205) is equal to the inner diameter of the external injection needle tube (1), and the outer diameter of the limiting rubber column (208) is equal to the inner diameter of the snap-fit groove (207).
5. A cell needle knife with a drug channel according to claim 1, characterized in that: An installation groove is provided on the inner side of the grip (203) at the position corresponding to the external injection needle (1), and the external injection needle (1) is connected to the grip (203) through the installation groove.
6. The cell needle knife with drug delivery channel according to claim 1, characterized in that: The outer diameter of the connecting tube (209) is equal to the inner diameter of the inner injection needle tube (212), and the inner injection needle tube (212) is connected to the discharge hole (210) through the connecting tube (209).
7. A cell needle knife with a drug channel according to claim 1, characterized in that: The inner side of the needle tube connecting groove (214) is a rough curved surface, and the needle tube connecting groove (214) is connected to the internal injection needle tube (212).
8. A cell needle knife with a drug channel according to claim 1, characterized in that: A limiting component (3) is installed at the top of the external injection needle (1). The limiting component (3) includes a filling funnel (301); The top end of the external injection needle tube (1) is welded with an injection funnel (301). An injection chamber (302) is opened on the inner side of the injection funnel (301). A threaded ring (303) is threadedly connected to the top of the outer side of the injection funnel (301). A sealing plate (304) is welded to the top end of the threaded ring (303). A sliding groove (305) is opened at the middle of the inner side of the sealing plate (304). A limiting spring (306) is spot-welded to the top end of the sealing plate (304). A limiting plate (307) is sleeved on the outer side of the internal injection needle tube (212). A fixing post (308) is welded to the top end of the sealing plate (304). A positioning groove (309) is opened on the inner side of the limiting plate (307). A welding groove (310) is opened at the middle of the inner side of the limiting plate (307).
9. A cell needle knife with a drug channel according to claim 8, characterized in that: The inner diameter of the threaded ring (303) is equal to the outer diameter of the filling funnel (301), and the filling chamber (302) is connected to the storage chamber (206).
10. A cell needle knife with a drug delivery channel according to claim 8, characterized in that: The inner diameter of the sliding groove (305) is equal to the outer diameter of the inner injection needle tube (212), and the inner diameter of the positioning groove (309) is twice that of the fixed column (308).