Puncture needle assembly with driving mechanism and instrument comprising puncture needle assembly

Abstract

The puncture needle assembly with the driving mechanism is characterized in that the puncture needle assembly comprises the driving mechanism and a puncture needle, the puncture needle is provided with a needle body and a needle base arranged on the needle body, an outer needle part is further provided with a strip-shaped accessory arranged on the needle body of the outer needle part, the strip-shaped accessory is provided with a rack, and the rack is arranged on the outer needle part. The driving mechanism is provided with a fixing part, a clamping part and a driving gear, wherein the clamping part and the driving gear are fixedly connected with the fixing part, and the clamping part is provided with a sliding groove matched with the strip-shaped accessory. The puncture needle assembly with the driving mechanism is driven by the driving gear to conduct puncture, physical strength of doctors is saved, and operation efficiency is improved. In addition, through intermittent meshing of the driving gear and the rack, large impact is decomposed into small impact for multiple times, and the pain feeling of the patient is relieved.

Description

Technical Field

[0001] The present invention relates to the field of medical instruments, in particular to a puncture needle assembly with a driving mechanism and an instrument containing the same. Background Art

[0002] TIPS (transjugular intrahepatic portosystemic shunt) is known as the ultimate treatment for massive gastrointestinal bleeding in cirrhosis. It uses the principle of surgical shunt and a series of interventional instruments to establish an artificial shunt channel between the hepatic vein and the portal vein in the liver parenchyma, thereby reducing portal pressure and reducing or eliminating symptoms such as esophageal varicose vein rupture bleeding and ascites caused by portal hypertension. The key step in the implementation of TIPS is to send the puncture needle along the internal jugular vein to the vicinity of the opening of the hepatic vein, and then directly puncture the portal vein through the liver. If this step is completed, the operation is more than half successful. In the prior art, all punctures are done manually by doctors. However, there are relatively large individual differences in the human organs that are punctured. For example, the livers of different patients with cirrhosis are very hard and require a lot of force to puncture, while others are very elastic and difficult to puncture. Faced with the huge differences between individuals, doctors usually need half an hour to an hour to complete the puncture. After a lot of practice and accumulation of puncture experience, skilled doctors can complete the puncture within a few minutes, but the puncture process may consume more physical strength to complete. When continuing to perform operations on different patients, the puncture will gradually consume too much physical strength and affect the efficiency of the entire operation. When performing a puncture, the doctor may run the risk of extrahepatic puncture and intraperitoneal bleeding due to improper force. This risk will occur for ordinary doctors, and even for experienced doctors who are in poor mental or physical condition. Summary of the invention

[0003] In view of this, the present invention provides a puncture needle assembly with a driving mechanism and an instrument containing the same, wherein the puncture needle assembly with a driving mechanism has the technical effect of saving the doctor's physical strength and improving the efficiency of the operation. The present invention includes the following embodiments:

[0004] Embodiment 1. A puncture needle assembly with a driving mechanism, characterized in that it includes: a driving mechanism and a puncture needle, the puncture needle having a needle body and a needle seat arranged on the needle body, the needle seat dividing the needle body into an inner needle part and an outer needle part, the inner needle part is used to enter the human body to puncture the human body structure, the outer needle part also has a strip-shaped attachment arranged on the needle body of the outer needle part, the strip-shaped attachment has a rack, the driving mechanism has a fixed part and a clamping part fixedly connected to the fixed part and a driving gear, the clamping part has a slide groove cooperating with the strip-shaped attachment, so that when the clamping part clamps the strip-shaped attachment, the driving gear and the rack can be at least partially engaged, and can drive the outer needle part to slide in the slide groove.

[0005] Embodiment 2. The puncture needle assembly with a drive mechanism according to embodiment 1 is characterized in that the drive gear is only engaged with the rack by 1 / 10 to 1 / 2, that is, when the drive gear rotates one circle, only 1 / 10 to 1 / 2 of the movement drives the rack.

[0006] Embodiment 3. The puncture needle assembly with a drive mechanism according to embodiment 1 is characterized in that the drive gear is elliptical, star-shaped, polygonal, etc., so that the drive gear and the rack can only partially mesh.

[0007] Embodiment 4. The puncture needle assembly with a drive mechanism according to embodiment 1 is characterized in that the strip-shaped accessory has a scale, and the scale value on the scale corresponds to the length of the meshing rack. When the clamping portion clamps the strip-shaped accessory, the drive gear and the rack can be meshed at a specific scale value, and the specific scale value is the maximum achievable puncture distance.

[0008] Embodiment 5. The puncture needle assembly with a driving mechanism according to embodiment 1 is characterized in that the driving mechanism has a motor, and the motor runs under electric drive and transmits power to the driving gear through a transmission mechanism.

[0009] Embodiment 6. The puncture needle assembly with a drive mechanism according to embodiment 1 is characterized in that the puncture needle is hollow or solid.

[0010] Embodiment 7. The puncture needle assembly with a drive mechanism according to embodiment 1 is characterized in that the strip-shaped accessory is a sleeve sleeved on the outer needle portion.

[0011] Embodiment 8. The puncture needle assembly with a drive mechanism according to Embodiment 7 is characterized in that the cross-sectional outer contour shape of the sleeve and the cross-sectional contour shape of the slide groove are non-circular, and there is a clearance fit between the slide groove and the strip-shaped attachment, so that when the slide groove accommodates the sleeve, the sleeve cannot rotate in the slide groove.

[0012] Embodiment 9. A liver vascular treatment device, comprising the puncture needle assembly with a driving mechanism as described in any one of embodiments 1-8.

[0013] The puncture needle assembly with a driving mechanism of the present application is driven by the driving gear to perform puncture, which saves the doctor's physical strength and improves the efficiency of the operation. In addition, the present application uses the intermittent meshing of the driving gear and the rack. When meshing, the puncture needle is driven to perform puncture. In the non-meshing state, the stress is released, allowing the puncture needle to rebound, thereby reducing the stress. Through multiple puncture actions, a large impact is resolved into multiple smaller impacts, simulating the doctor's actual operation, and reducing the patient's pain. Practice shows that ordinary doctors usually need half an hour or even an hour to complete the liver puncture link. A skilled doctor who has performed a large number of operations and accumulated rich operating experience can complete the puncture link within 3-5 minutes and complete the entire TIPS operation within 1-2 hours. However, due to the excessive physical effort consumed in the puncture link, which affects the efficiency of the operation, an experienced doctor can perform surgery on about 8 patients a day. Using the puncture needle assembly of the present application to assist in puncture, ordinary doctors can also complete liver puncture within 3-5 minutes like experienced doctors, greatly shortening the puncture time, and can save a lot of physical strength, thereby greatly improving the efficiency of the operation. In addition, the driving mechanism of the present application can avoid the risk of intra-abdominal bleeding caused by extrahepatic puncture due to improper force. This risk may occur to ordinary doctors, and even to experienced doctors when they are in poor mental or physical condition. The technical solution of the present application can avoid the huge risks brought by puncture.

[0014] In addition, the technical solution of the present invention also brings many other advantages, which will be described in detail in the specific implementation manner.

[0015] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0017] Figure 1 is a schematic diagram of a puncture needle assembly with a drive mechanism;

[0018] Figure 2 is a schematic diagram of a drive mechanism in a puncture needle assembly;

[0019] Figure 3 is a schematic diagram of the strip attachment and the outer needle portion entering the clamping portion;

[0020] Figure 4 yes Figure 1 Right side cross-sectional view of the puncture needle assembly in.

[0021] Figure numerals: 100 - driving mechanism, 110 - fixing part, 120 - clamping part, 130 - driving gear, 140 - sliding groove, 200 - puncture needle, 210 - needle body, 220 - needle seat, 211 - internal needle, 212 - external needle, 213 - strip-shaped attachment, 20 - rack. DETAILED DESCRIPTION

[0022] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted.

[0023] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present invention. However, those skilled in the art will appreciate that the technical solution of the present invention can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring various aspects of the present invention.

[0024] One aspect of the present invention provides a puncture needle assembly with a drive mechanism, characterized in that it includes:

[0025] Drive mechanism and puncture needle,

[0026] The puncture needle comprises a needle body and a needle seat arranged on the needle body, wherein the needle seat divides the needle body into an inner needle portion and an outer needle portion, wherein the inner needle portion is used to enter the human body to puncture the human body structure.

[0027] The outer needle part also has a strip-shaped attachment arranged on the needle body of the outer needle part, and the strip-shaped attachment has a rack.

[0028] The driving mechanism comprises a fixing portion, a clamping portion fixedly connected to the fixing portion, and a driving gear, wherein the clamping portion comprises a slide groove cooperating with the strip-shaped accessory, so that when the clamping portion clamps the strip-shaped accessory, the driving gear and the rack can be at least partially engaged and can drive the outer needle portion to slide in the slide groove.

[0029] In the present application, the clamping part is fixedly connected to the fixing part, and has two states of opening and closing relative to the fixing part. In the open state, the outer needle part can be accommodated in the slide groove. In the closed state, the clamping part can clamp the strip-shaped attachment and make the rack and the driving gear at least partially meshed. The slide groove cooperates with the strip-shaped attachment and can accommodate the strip-shaped attachment and the outer needle part, and make the outer needle part slide back and forth in the slide groove. Therefore, when the driving gear is working, the power is transmitted through the meshing with the rack and the outer needle part is driven to slide in the slide groove, while the position of the driving mechanism remains unchanged, the forward and backward movement direction of the inner needle part is limited by the clamping part and the vascular access, and the outer needle part pushes the inner needle part to complete the puncture of the internal structure of the human body such as the liver, realizing the replacement of manual puncture.

[0030] In the prior art, all punctures are done manually by doctors. However, in some surgeries, there are large individual differences in the human organs to be punctured. For example, the livers of different patients with cirrhosis are very hard, while others are very elastic and difficult to puncture. Different strengths are required. Doctors may spend a lot of energy to puncture some patients, which may consume more physical strength and require a lot of experience. At the same time, they are also limited by experience, which in turn affects the efficiency of the entire operation. The puncture needle is driven by the drive gear for puncture, which saves the doctor's physical strength and improves the efficiency of the operation.

[0031] In some embodiments, the drive gear is only meshed with the rack by 1 / 10 to 1 / 2, that is, when the drive gear rotates one circle, only 1 / 10 to 1 / 2 of the movement drives the rack. During the TIPS puncture process, the puncture needle will rebound when puncturing the liver. If it is pierced into the patient's organ at one time, it will cause a large impact and pain to the patient. The present application is configured so that the drive gear is only meshed with the rack by 1 / 10 to 1 / 2, so that the drive gear and the rack are intermittently meshed. When meshed, the puncture needle is driven to puncture. In the non-meshing state, the stress is released, allowing the puncture needle to rebound, thereby reducing the stress. Through multiple puncture actions, a large impact is resolved into multiple smaller impacts, simulating the actual operation of doctors and reducing the patient's pain.

[0032] In some embodiments, the driving gear is elliptical, star-shaped, polygonal, etc., so that the driving gear and the rack can only partially mesh. In the case where the driving gear is non-circular, during the rotation of the driving gear, the gear and the rack intermittently mesh, and when meshed, the puncture needle is driven to puncture, and in the non-meshing state, the stress is released, allowing the puncture needle to rebound, thereby reducing the stress, so that intermittent puncture can be achieved, and a large impact is resolved into multiple smaller impacts, simulating the actual operation of doctors and reducing the pain of patients.

[0033] In some embodiments, the strip-shaped accessory has a scale, and the scale value on the scale corresponds to the length of the meshing rack. When the clamping part clamps the strip-shaped accessory, the drive gear and the rack can be meshed at a specific scale value, and the specific scale value is the maximum achievable puncture distance. By marking the puncture distance scale value on the strip-shaped accessory, the puncture distance of the puncture needle can be accurately controlled by the position of the clamping part. Under the guidance of precise scales, in conjunction with angiography and puncture needle position detection, the required advancement distance of the puncture needle can be accurately determined to achieve precise puncture. This is an effect that cannot be achieved by manual puncture by doctors in the prior art. In addition, in this case, it is also convenient for doctors to decompose a longer puncture distance into multiple small puncture distances for combined puncture.

[0034] In some embodiments, the driving mechanism has a motor, which is driven by electricity and transmits power to the driving gear through a transmission mechanism. Although this structure is not shown in the drawings, those skilled in the art should understand that motors and transmission mechanisms are common knowledge in the art, and that it is common knowledge in the art to enable gears to obtain power through transmission mechanisms, and those skilled in the art can configure it according to actual needs.

[0035] In some embodiments, the puncture needle is hollow or solid.

[0036] In some embodiments, the strip-shaped attachment is a sleeve sleeved on the outer needle portion.

[0037] In some embodiments, the cross-sectional outer contour of the sleeve and the cross-sectional contour of the chute are non-circular, and there is a clearance fit between the chute and the strip-shaped attachment, so that when the chute accommodates the sleeve, the sleeve cannot rotate in the chute. A circular component is easily rotated in a circular chute due to torsion, thereby causing puncture deformation. The present application defines the cross-sectional outer contour of the sleeve and the cross-sectional contour of the chute as non-circular, such as a triangle, rectangle, ellipse, square, or other polygons, and there is a clearance fit relationship between the two. The clearance fit refers to the small gap between the chute and the strip-shaped attachment, which can limit the rotation of the sleeve in the chute. The outer needle can only move forward and backward under the drive of the driving gear to ensure the stability of the puncture.

[0038] Another aspect of the present invention provides a liver vascular treatment device, which includes the puncture needle assembly with a driving mechanism.

[0039] The present application will be more specifically illustrated by the following examples.

[0040] Example

[0041] like Figures 1 to 4As shown, this embodiment discloses a puncture needle assembly with a driving mechanism, characterized in that it includes: a driving mechanism 100 and a puncture needle 200, wherein the puncture needle has a needle body 210 and a needle seat 220 arranged on the needle body, wherein the needle seat 220 divides the needle body 210 into an inner needle portion 211 and an outer needle portion 212, wherein the inner needle portion 211 is used to enter the human body to perform puncture of the human body structure, and the outer needle portion 212 also has a strip-shaped attachment 213 arranged on the needle body of the outer needle portion, The strip-like accessory 213 has a rack 20, and the driving mechanism 100 has a fixing portion 110 and a clamping portion 120 and a driving gear 130 fixedly connected to the fixing portion. The clamping portion 120 has a slide groove 140 that cooperates with the strip-like accessory 213, so that when the clamping portion 120 clamps the strip-like accessory 213, the driving gear 130 can be at least partially engaged with the rack 20 and can drive the outer needle portion 212 to slide in the slide groove 140.

[0042] The driving gear 130 is only meshed with the rack 20 by 1 / 2, that is, when the driving gear 130 rotates one circle, only 1 / 2 circle of movement drives the rack. Figure 1 The figure shows that three 1 / 6-turn gears can mesh with the rack. During the rotation of the driving gear, the gear and the rack mesh intermittently. When meshing, the puncture needle is driven to puncture. In the non-meshing state, the stress is released, allowing the puncture needle to rebound, thereby reducing the stress, so that intermittent puncture can be achieved, and a large impact is resolved into multiple smaller impacts, simulating the actual operation of doctors and reducing the pain of patients.

[0043] The strip attachment 213 is a sleeve sleeved on the outer needle portion 212. The cross-sectional outer contour of the sleeve and the cross-sectional contour of the slide slot 140 are both rectangular, and there is a clearance fit between the slide slot 140 and the strip attachment 213 (such as Figure 4 As shown), when the slide groove accommodates the sleeve, the sleeve cannot rotate in the slide groove.

[0044] like Figures 2 to 4 As shown, the clamping portion 120 is a movable component and has an opening ( Figure 3 shown) and closed ( Figure 4The outer needle 212 can be placed in the slide groove 140 in the open state, and can be clamped in the strip-shaped attachment 213 so that the rack 20 and the driving gear 130 can at least partially mesh. The slide groove 140 cooperates with the strip-shaped attachment 213 and can accommodate the strip-shaped attachment 213 and the outer needle 212, and can make the outer needle 212 slide back and forth in the slide groove 140. Therefore, when the driving gear 130 is working, the outer needle 212 is driven to slide in the slide groove 140 by meshing with the rack 20 to transmit power, and the outer needle 212 is driven to slide in the slide groove 140. The outer needle 212 pushes the inner needle 211 to complete the puncture of the human body structure, thereby replacing manual puncture.

[0045] Experiments have shown that, by using the puncture needle assembly of the present application to assist in puncture, ordinary doctors can complete liver puncture in 3-5 minutes, just like experienced doctors, which greatly shortens the puncture time and saves a lot of physical strength, thereby greatly improving the efficiency of the operation. In addition, the driving mechanism of the present application can avoid the risk of intraperitoneal bleeding caused by improper force during extrahepatic puncture.

[0046] The exemplary embodiments of the present disclosure are specifically shown and described above. It should be understood that the present disclosure is not limited to the detailed structures, configurations or implementations described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent configurations included in the spirit and scope of the appended claims.

Claims

1. A puncture needle assembly with a drive mechanism, characterized in that: include: Drive mechanism and puncture needle, The puncture needle comprises a needle body and a needle seat arranged on the needle body, wherein the needle seat divides the needle body into an inner needle portion and an outer needle portion, wherein the inner needle portion is used to enter the human body to puncture the human body structure. The outer needle part also has a strip-shaped attachment arranged on the needle body of the outer needle part, and the strip-shaped attachment has a rack. The driving mechanism comprises a fixing portion, a clamping portion fixedly connected to the fixing portion, and a driving gear, wherein the clamping portion comprises a slide groove cooperating with the strip-shaped accessory, so that when the clamping portion clamps the strip-shaped accessory, the driving gear and the rack can be at least partially engaged and can drive the outer needle portion to slide in the slide groove.

2. The puncture needle assembly with a driving mechanism according to claim 1, characterized in that: The driving gear is only meshed with the rack by 1 / 10 to 1 / 2, that is, when the driving gear rotates one circle, only 1 / 10 to 1 / 2 of the movement drives the rack.

3. The puncture needle assembly with a driving mechanism according to claim 1, characterized in that: The driving gear is elliptical, star-shaped, polygonal, etc., so that the driving gear and the rack can only partially mesh.

4. The puncture needle assembly with a driving mechanism according to claim 1, characterized in that: The strip-shaped attachment has a scale, and the scale value on the scale corresponds to the length of the meshable rack. When the clamping part clamps the strip-shaped attachment, the driving gear and the rack can be meshed at a specific scale value, and the specific scale value is the maximum achievable puncture distance.

5. The puncture needle assembly with a driving mechanism according to claim 1, characterized in that: The driving mechanism has a motor, which runs under electric drive and transmits power to the driving gear through a transmission mechanism.

6. The puncture needle assembly with a driving mechanism according to claim 1, characterized in that: The puncture needle is hollow or solid.

7. The puncture needle assembly with a driving mechanism according to claim 1, characterized in that: The strip-shaped accessory is a sleeve sleeved on the outer needle portion.

8. The puncture needle assembly with a driving mechanism according to claim 7, characterized in that: The cross-sectional outer contour shape of the sleeve and the cross-sectional contour shape of the slide groove are non-circular, and there is a clearance fit between the slide groove and the strip-shaped attachment, so that when the slide groove accommodates the sleeve, the sleeve cannot rotate in the slide groove.

9. A liver vascular treatment device, comprising the puncture needle assembly with a driving mechanism according to any one of claims 1 to 8.

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