CN219557498U - Puncture positioning needle - Google Patents

Abstract

The utility model discloses a puncture positioning needle, which comprises a handle assembly, a sliding block assembly, a crochet needle assembly, a puncture needle tube, a positioning wire and a push rod, wherein the handle assembly is connected with the sliding block assembly; the push rod is fixedly arranged in the handle assembly, the tip end of the push rod extends out of the puncture end of the handle assembly, the puncture needle tube is coaxially sleeved on the push rod, the sliding block assembly is connected with the puncture needle tube, the crochet hook assembly is positioned at the end part of the push rod and is compressed in a needle hole of a needle point of the puncture needle tube, the crochet hook assembly is connected with one end of a positioning wire, and the other end of the positioning wire penetrates through the push rod and is led out of the handle assembly; the slider is connected with the puncture needle tube, the hook needle assembly is sent into the focus part of a patient through the puncture needle tube, the slider and the puncture needle tube are retracted through the trigger key, so that the hook needle assembly is firmly locked on a focus and is not easy to slip off, a doctor can conveniently operate by one hand, the infection risk is avoided, discomfort of the patient can be relieved, the puncture positioning needle with protection function on important viscera around the focus is ensured, and safe and reliable operation is ensured.

Description

Puncture positioning needle

Technical Field

The utility model relates to the technical field of medical treatment, in particular to a puncture positioning needle.

Background

The incidence of pulmonary nodules, thyroid nodules/cancers, breast nodules/tumors, and other tumors or foreign matter has a tendency to go higher in recent years due to changes in eating habits and lifestyle. With the continued development and advancement of imaging techniques, CT, MRI, ultrasound examination, etc. are widely used for screening and diagnosis of small lung nodules, thyroid nodules/cancer, breast nodules/tumors, and other tumors or foreign matter, and many related diseases are discovered early. The conventional treatment after detection is to perform surgery on the patient to ablate the lesions. For micro-lesions or stealth lesions, the probability of not being found in the operation is more than 50%, and the lesions with smaller size and deeper distance from the skin surface can hardly be found in the operation. And the specific position of the focus in the postoperative specimen is difficult to determine, so that focus tissues are difficult to quickly find when pathological examination is carried out, pathological tissue sections need to be repeated for a plurality of times, and even focus omission can occur. The localization of these tiny/stealth lesions has been a difficult problem for doctors.

In general, imaging of a focal site presents a high density shadow, in order to accurately lock the focal site, to provide a clinician with a definite guide, reduce the incision, reduce the surgical damage, and facilitate determination of the focal site in a post-operative specimen, the focal site needs to be positioned under the guidance of a medical image before resection, and a commonly used positioning instrument is a puncture positioning needle.

The existing puncture positioning needle mostly adopts an inelastic hard needle rod and cannot stretch and retract, so that the existing puncture positioning needle cannot adapt to relaxation of muscles or viscera caused by breathing or activities. When the focus part collapses, the hard needle bar of the positioning needle is easily clamped by muscles, so that the positioning needle is pulled, viscera are damaged, pain is caused, and the positioning needle is easily fallen off; secondly, current puncture locating needle is mostly both hands cooperation, and the mode of bare-handed propelling movement is inconvenient clinical skill person's operation, and the needle tail that the rear end exposes easily pierces the latex glove, exists the infection risk.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides the puncture positioning needle which can firmly lock the focus and is not easy to slip, a doctor can conveniently operate by one hand, the risk of infection is avoided, discomfort of a patient can be relieved, the protection effect on important organs around the focus is exerted, and safe and reliable operation is ensured.

The utility model is realized by the following technical scheme:

a puncture positioning needle comprises a handle component, a sliding block component, a crochet component, a puncture needle tube, a positioning wire and a push rod;

the push rod is fixedly arranged in the handle assembly, the tip end of the push rod extends out of the puncture end of the handle assembly, the puncture needle tube is coaxially sleeved on the push rod, the sliding block assembly is connected with the puncture needle tube, the crochet hook assembly is positioned at the end part of the push rod and is compressed in a needle hole of a needle point of the puncture needle tube, the crochet hook assembly is connected with one end of a positioning wire, and the other end of the positioning wire penetrates through the push rod and is led out of the handle assembly; when the sliding block component slides to the lead end of the handle component, the crochet component can be locked with the focus part.

Preferably, the sliding block assembly comprises a sliding block, an elastic part and a hooking structure;

the sliding block is sleeved on the ejector rod, the end part of the sliding block is fixedly connected with the tail end of the puncture needle tube, the elastic component is sleeved on the sliding block, the sliding block is connected with the handle assembly through the hooking structure, and when the sliding block is in a locking state, the elastic component is in a compression state.

Preferably, the elastic component is a spring or an elastic rubber sleeve.

Preferably, the hooking structure comprises a hook rod, a reverse hook and a hook matched with the reverse hook;

the fixed end of the hook rod is fixedly connected with the end part of the sliding block, the reverse hook is arranged at the free end of the hook rod, the free end of the hook rod extends to the puncture end of the handle assembly, and the clamping hook is arranged on the inner wall of the handle assembly.

Preferably, the hook rod is provided with a trigger key, the handle component is provided with a sliding hole, and the upper end of the trigger key extends out of the sliding hole.

Preferably, the handle assembly is also provided with a safety buckle for limiting the trigger key.

Preferably, the crochet component comprises a needle rod and a crochet, and forms a V-shaped barb structure, one end of the needle rod is connected with the connecting ring, and the open end of the barb structure is compressed in the puncture needle tube.

Preferably, the handle assembly is provided with an indication mark for indicating the deformation release direction of the crochet hook assembly.

Preferably, the end part of the puncture needle tube is an inclined needle point structure.

Preferably, the alignment wire is led from the lead end of the handle assembly.

Compared with the prior art, the utility model has the following beneficial technical effects:

the utility model provides a puncture positioning needle, which comprises a handle assembly, a sliding block assembly, a crochet needle assembly, a puncture needle tube, a positioning wire and a push rod; the hook needle component is connected with the puncture needle tube through the puncture needle tube, the hook needle component is fed into the focus part of a patient, the slide block and the puncture needle tube are retracted through the trigger key, the hook needle component is locked with the focus part, meanwhile, the hook needle component is connected with the flexible positioning wire, when the viscera and the muscles of the focus part breathe or move, the flexible positioning wire has certain elasticity and is in a free state, so that the hook needle component cannot be pulled, pain is caused to the patient, and the problems that the viscera is damaged by pulling of the existing hard positioning needle and the positioning needle falls off easily are solved.

Further, the locating wire is drawn out from the lead end of the handle assembly, and the locating wire is a flexible wire, so that the protective device of the medical staff cannot be damaged by mistake, and the operation safety of the medical staff is improved.

Drawings

FIG. 1 is a schematic view of the appearance of a puncture needle according to the present utility model;

FIG. 2 is a schematic view of the handle engaging structure and the distal circular hole of the present utility model;

FIG. 3 is a schematic view of the assembled structure of the front cap and the handle portion of the present utility model;

FIG. 4 is a schematic view showing the internal structure of the puncture positioning needle according to the present utility model;

FIG. 5 is a schematic view showing the internal structure of the puncture positioning needle according to the present utility model;

FIG. 6 is a schematic view of the internal structure of the puncture positioning needle according to the present utility model;

FIG. 7 is a schematic diagram of a triggering and safety device according to the present utility model.

In the figure: 1. the upper part of the handle; 2. the upper part of the handle; 3. a safety buckle; 4. a hooking structure; 5. a handle front cap; 6. an indication mark; 7. puncture needle tube; 8. a positioning line; 9. a push rod; 10. a spring; 11. a slider assembly; 12. a connecting ring; 13. a needle bar; 14. a crochet hook; 15. a round hole; 16. a clamping structure; 17. a handle cross plate; 18. a handle cross plate; 19. a handle cross bar; 102. a clamping structure; 101 clamping grooves; 102. a semicircular hole; 103. a slip hole; 104, clamping hooks; 201 clamping blocks; 202. a semicircular hole; 401. triggering a key; 402 reverse hooks; 403 a slider; 404. a spring cap; 501. and a mesopore.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings, which illustrate but do not limit the utility model.

Definition: the two ends of the handle component are respectively defined as a puncture end and a lead end, wherein one end of the puncture needle tube extending out is the puncture end, and the other end is the lead end.

Referring to fig. 1-3, a puncture positioning needle comprises a handle assembly, a sliding block assembly 11, a crochet needle assembly, a puncture needle tube 7, a positioning wire 8 and a push rod 9;

the push rod 9 is fixedly arranged in the handle assembly, the tip end of the push rod 9 extends out of the puncture end of the handle assembly, the puncture needle tube 7 is coaxially sleeved on the push rod 9, the sliding block assembly is connected with the puncture needle tube 7, the crochet hook assembly is positioned at the end part of the push rod and is compressed in a needle hole of a needle point of the puncture needle tube 7, the crochet hook assembly is connected with one end of the positioning wire 8, and the other end of the positioning wire 8 penetrates through the push rod and is led out of the handle assembly; when the sliding block component slides to the lead end of the handle component, the crochet component can be locked with the focus part.

Referring to fig. 4 and 5, the slider assembly includes a slider 403, an elastic component and a hooking structure 4, the slider 403 is sleeved on the ejector rod 9, the end of the slider 403 is coaxially and fixedly connected with the end of the puncture needle tube 7, the elastic component is sleeved on the slider, one end of the elastic component, which is close to the lead end of the handle assembly, is fixedly connected with the slider, the handle assembly is internally provided with a handle transverse plate 17, the other end of the elastic component is abutted to the first handle transverse plate 17, the slider 403 is connected with the handle assembly through the hooking structure, when the slider 403 is in a locking state, the elastic component is in a compression state, and at this time, the crochet needle assembly is compressed in a needle hole of the needle point of the puncture needle tube 7. The handle assembly is also provided with a second handle transverse plate 18 for limiting the sliding stroke of the sliding block, the second handle transverse plate 18 is positioned on one side of the sliding block, which is close to the lead end of the handle assembly, and the distance between the end of the sliding block and the second handle transverse plate 18 is set according to the distance required by the release of the crochet hook assembly, namely, the rebound distance of the spring 10 is limited by the second handle transverse plate 18. After the slider is triggered, the distance the spring 10 rebounds just ensures the complete release of the crochet assembly.

The elastic component is spring 10 or high-elastic rubber sleeve, preferably spring, and the spring is overlapped on the slider, and the slider is close to the one end of lead terminal and is provided with spring cap 404, and the tip butt of spring is on the terminal surface of spring cap 404.

Referring to fig. 7, the hooking structure includes a hook rod, a reverse hook 402 and a hook 104 matched with the hook rod, wherein the fixed end of the hook rod is fixedly connected with the end of the slider, the reverse hook 402 is arranged at the free end of the hook rod, the free end of the hook rod extends towards the piercing end of the handle assembly, the hook 104 is arranged on the inner wall of the handle assembly, the hook 104 forms a protruding structure on the inner wall of the handle assembly, the reverse hook 402 is hooked with the hook 104, the slider is axially positioned, and the spring is in a compressed state; the trigger key 401 is arranged on the hook rod, the sliding hole 103 is arranged on the handle component, the upper end of the trigger key 401 extends out of the sliding hole 103, when the sliding block needs to be triggered, downward pressure is applied to the trigger key 401, the hook rod is bent downwards, the reverse hook 402 is separated from the hook 104, the sliding block and the puncture needle tube slide towards the lead end of the handle component under the action of the spring, and at the moment, the compressed hook needle component is released to be locked with a focus part.

In order to cause the trigger key 401 to be triggered by mistake by unexpected external force, the handle component is also provided with a safety buckle 3, the safety buckle 3 is of a C-shaped structure, one end of the safety buckle 3 is provided with a blocking block, the safety buckle 3 is clamped on the handle component, the blocking block is positioned in the sliding hole 103, one end of the blocking block is abutted with the side wall of the trigger key 401, the other end of the blocking block is abutted with the end face of the sliding hole 103, the safety buckle 3 is provided with a pressing plate, when the safety buckle 3 is removed, the handle component is held by a hand, the pressing plate is pressed by a thumb to deform the safety buckle 3, and the blocking block is separated from the sliding hole 103; the safety buckle 3 prevents the device from triggering due to transportation, shaking or misoperation, and when in use, the safety buckle 3 is taken down firstly, then the trigger key 401 is pressed down, and the sliding block is triggered under the resilience force of the spring 10.

The ejector rod is of a hollow structure, the positioning wire 8 is arranged in the ejector rod 9 in a penetrating mode, the positioning wire 8 is connected with the crochet needle assembly through the connecting ring 12, the end portions of the crochet needle assembly and the ejector rod are only in a contact state, the crochet needle assembly is positioned through the puncture needle tube 7, the handle assembly is further provided with a third handle cross rod 19, the fixed end of the ejector rod is fixedly connected with the third handle cross rod 19, and the other end of the ejector rod sequentially penetrates through the second handle cross rod and the first handle cross rod to extend out to the puncture end of the handle assembly and is located in the puncture needle tube.

Referring to fig. 6, the crochet component comprises a needle bar 13 and a crochet 14, the needle bar 13 and the crochet 14 form a V-shaped barb structure, the crochet 14 and the needle bar 13 are bent and formed integrally, one end of the needle bar 13 is connected with the connecting ring, the open end of the barb structure is compressed in the puncture needle tube, the end of the puncture needle tube is of an inclined plane needle point structure, the outward release direction of the crochet 14 is consistent with the inclined plane needle point structure at the proximal end of the puncture needle tube 7, when the slider drives the puncture needle tube to move, the ejector rod positions the crochet component, when the puncture needle tube moves and is separated from the crochet component, the needle bar 13 and the crochet 14 deform and can be locked with a focus part.

The positioning wire is made of medical flexible materials.

Referring to fig. 2 and 3, the handle assembly includes a handle upper portion 1, a handle upper portion 2 and a handle front cap 5, the assembly edges of the handle upper portion 1 and the handle upper portion 2 are provided with a plurality of groups of clamping structures, the assembly of the handle upper portion 1 and the handle upper portion 2 is realized through the plurality of groups of clamping structures, the clamping structures include clamping grooves 101 respectively arranged on the handle upper portion 1 and the handle upper portion 2 and clamping blocks 201 matched with the clamping grooves, the handle front cap 5 is located at a piercing end of the handle assembly and is connected with the handle upper portion 1 and the handle upper portion 2 through the clamping structures 16, a middle hole 501 is formed in the handle front cap 5, and the piercing needle tube 7 passes through the middle hole 501 and can radially slide along the piercing needle tube 7. The front cap 5 of the handle is also provided with an indication mark 6 for indicating the releasing direction of the hook rod 14.

The lead end of the handle upper part 1 is provided with a semicircular hole 102, the lead end of the handle lower part 2 is provided with a semicircular hole 202, the semicircular holes 102 and 202 form a circular hole 15 together, and the positioning wire 8 passes through the circular hole 15 and is led out of the handle assembly. The inside of handle upper portion 1 and handle upper portion 2 corresponds the multiunit handle diaphragm that sets up, and wherein, first handle diaphragm 17 is used for spacing to the lead terminal of spring 10, and second handle diaphragm 18 is used for the resilience spacing of slider, and third handle diaphragm 19 is used for the fixed to the lead terminal of ejector pin 9, and other handle diaphragms mainly function as strengthening handle overall structure, and each handle diaphragm center is provided with the mesopore, supplies the setting wire 8 to pass or thimble 9 or puncture needle tubing 7 or slider 403 to pass.

Before the puncture positioning needle is used, the sliding block is hooked and positioned with the hook 104 of the handle assembly through the reverse hook 402 at the end part of the hook rod, at the moment, the puncture end of the ejector rod is positioned inside the needle point of the puncture needle tube 7, the opening ends of the needle rod 13 and the hook needle 14 are compressed, the hook needle assembly is fixed in the needle hole of the needle point of the puncture needle tube 7, the hook needle assembly is connected with the positioning wire through the connecting ring, and the other end of the positioning wire is led out from the lead end of the handle assembly.

When the puncture needle is used, the safety buckle 3 is removed firstly, the handle assembly is held by hands to puncture the puncture needle tube 7 into a focus part, then the trigger key 401 is pressed, the sliding block drives the puncture needle tube 7 to slide towards the lead end, at the moment, the hook needle assembly is out of constraint and deforms to be fixed at the focus part, then the puncture needle is pulled out slowly, the positioning wire is released gradually, and the end part of the positioning wire is pulled out of the body.

According to the puncture positioning needle provided by the utility model, the sliding block is connected with the puncture needle tube 7, the crochet needle assembly is sent into a focus part of a patient through the puncture needle tube 7, the sliding block and the puncture needle tube are retracted through the trigger key, the crochet needle assembly is locked with the focus part, meanwhile, the crochet needle assembly is connected through the flexible positioning wire, when the viscera and muscles of the focus part breathe or move, the flexible positioning wire has certain elasticity and is in a free state, so that the crochet needle assembly cannot be pulled, pain is caused to the patient, the problem that the viscera is damaged by pulling of the traditional hard positioning needle, the problem that the positioning needle is easy to fall off is solved, secondly, the exposed needle tail of the traditional positioning needle is easy to puncture the latex glove, the infection risk is caused to medical staff, the problem is avoided when the flexible positioning wire is adopted, and the safety of the operation of the medical staff is improved.

Secondly, set up the instruction sign on the handle subassembly, carry out the explicit to the barb position of crochet component, avoid puncture accidental injury focus surrounding viscera problem, simultaneously, this puncture locating needle simple structure simple operation realizes single hand operation.

The above is only for illustrating the technical idea of the present utility model, and the protection scope of the present utility model is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present utility model falls within the protection scope of the claims of the present utility model.

Claims (10)

1. The puncture positioning needle is characterized by comprising a handle assembly, a sliding block assembly (11), a crochet hook assembly, a puncture needle tube (7), a positioning wire (8) and a push rod (9);

the push rod (9) is fixedly arranged in the handle assembly, the tip end of the push rod (9) extends out of the puncture end of the handle assembly, the puncture needle tube (7) is coaxially sleeved on the push rod (9), the sliding block assembly is connected with the puncture needle tube (7), the crochet hook assembly is positioned at the end part of the push rod and is compressed in a needle hole of the needle point of the puncture needle tube (7), the crochet hook assembly is connected with one end of the positioning wire (8), and the other end of the positioning wire (8) penetrates through the push rod and is led out of the handle assembly; when the sliding block component slides to the lead end of the handle component, the crochet component can be locked with the focus part.

2. A puncture positioning needle according to claim 1, characterized in that the slider assembly comprises a slider (403), an elastic member and a hooking structure (4);

the sliding block (403) is sleeved on the ejector rod (9), the end part of the sliding block (403) is fixedly connected with the tail end of the puncture needle tube (7), the elastic component is sleeved on the sliding block, the sliding block (403) is connected with the handle assembly through the hooking structure, and when the sliding block (403) is in a locking state, the elastic component is in a compression state.

3. A puncture positioning needle according to claim 2, characterized in that the elastic member is a spring or an elastic rubber sleeve.

4. A puncture positioning needle according to claim 2, characterized in that the hooking structure comprises a hooking rod, a reverse hook (402) and a hook (104) cooperating therewith;

the fixed end of the hook rod is fixedly connected with the end part of the sliding block, the reverse hook (402) is arranged at the free end of the hook rod, the free end of the hook rod extends to the puncture end of the handle assembly, and the clamping hook (104) is arranged on the inner wall of the handle assembly.

5. The puncture positioning needle according to claim 4, wherein the hook rod is provided with a trigger key (401), the handle assembly is provided with a sliding hole (103), and the upper end of the trigger key (401) extends out of the sliding hole (103).

6. The puncture positioning needle according to claim 5, characterized in that the handle assembly is further provided with a safety buckle (3) for limiting the trigger key (401).

7. A puncture positioning needle according to claim 1, characterized in that the crochet component comprises a needle bar (13) and a crochet needle (14) and forms a V-shaped barb structure, one end of the needle bar (13) is connected with the connecting ring, and the open end of the barb structure is compressed in the puncture needle tube.

8. A puncture positioning needle according to claim 1, characterized in that the handle assembly is provided with an indication mark (6) for indicating the deformation release direction of the crochet assembly.

9. A puncture positioning needle according to claim 1, characterized in that the end of the puncture needle tube (7) is a beveled needle tip structure.

10. A puncture positioning needle as set forth in claim 1, wherein the positioning wire is led out of the lead end of the handle assembly.