Positioning assembly of thoracocentesis needle

Abstract

The utility model discloses a thoracocentesis needle positioning assembly, which relates to the technical field of medical instruments, and comprises an annular base, a needle clamping device and a restorer, the annular base is provided with a central hole for a puncture needle to pass through, the bottom of the annular base is provided with a medical double faced adhesive tape, and the needle clamping device and the restorer are both arranged at the top of the annular base. The needle clamping device comprises clamping plates, bases and springs, the pair of clamping plates are arranged on the annular base in a sliding mode through the corresponding bases, the center hole is located between the pair of clamping plates, the springs are connected with the bases and the clamping plates, and the annular base with the center hole is pasted to the skin around a puncture point so that marking of the puncture point can be achieved. The restorer on the annular base can enable the clamping plates on the two sides to be far away from each other so that the puncture needle can be punctured and pulled away, the clamping plates on the two sides clamp and position the puncture needle under pushing of the spring, and therefore the problems that potential safety hazards exist and manpower resources are occupied when the puncture needle is manually clamped are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical appliances, in particular to a positioning component for a thoracentesis needle. Background Art

[0002] Thoracentesis (thoracentesis) is a technique used to extract fluid or air from the chest cavity of patients with pleural effusion (or pneumothorax) for diagnosis and treatment. Once the needle is inserted into the patient's body and reaches the designated location, an assistant typically uses forceps to hold the exposed end of the needle until aspiration is complete. This helps position the needle and prevents it from moving during subsequent procedures, leading to further insertion and discomfort, or even medical accidents.

[0003] However, since an assistant is required to manually clamp and position the puncture needle, it not only takes up human resources, but also there is a possibility that the puncture needle will become uncontrolled due to mistakes such as fatigue or sneezing by the assistant. That is, manually clamping and positioning the puncture needle poses a safety hazard. Utility Model Content

[0004] The purpose of the utility model is to provide a positioning assembly for a thoracentesis needle to solve the above technical problems.

[0005] Based on the above objectives, the present invention provides a positioning assembly for a thoracentesis needle, comprising:

[0006] An annular base having a central hole for the puncture needle to pass through, the annular base being positioned on the skin around the puncture point by medical double-sided tape;

[0007] a needle clamp, which is arranged on the annular base and is used to clamp and position the puncture needle passing through the central hole;

[0008] a resetter, which is arranged on the annular base and connected to the needle clamp, and is used to restore the needle clamp to an initial state where the puncture needle is not clamped;

[0009] The needle clamp comprises a clamping plate, a base and a spring, wherein a pair of clamping plates are slidably arranged on the annular base through corresponding bases, and the center hole is located between the pair of clamping plates;

[0010] The spring connects the base and the clamping plate to drive a pair of the clamping plates to clamp the puncture needle passing through the central hole;

[0011] The reducer is connected to a pair of clamping plates and is used to drive the pair of clamping plates away from each other.

[0012] Furthermore, a pair of the splints are slidably arranged on both sides of the annular base through two bases respectively, a guide groove is provided on the side of the base close to the center hole, a cover plate is provided on the top of the base, the splints are slidably plugged into the guide groove, and the spring is arranged in the guide groove.

[0013] Furthermore, the guide groove wall and one side of the clamping plate are both provided with limiting holes for spring insertion.

[0014] Furthermore, an arc-shaped groove is provided on one side of the splint close to the central hole, and an anti-slip rubber pad is provided on the wall of the arc-shaped groove.

[0015] Furthermore, a slot is provided on the wall of the arc-shaped groove, and the back of the anti-slip rubber pad has an arc-shaped convex strip plugged into the slot.

[0016] Furthermore, the resetter includes a connecting rod, a guide rod and a hinged joint, both ends of the splint are hinged with connecting rods, the two connecting rods located at the same end of a pair of splints are hinged through the hinged joint, and one end of the guide rod is connected to the hinged joint;

[0017] A bracket is provided on the annular base. The bracket is provided with a guide hole. The guide rod is slidably plugged into the guide hole.

[0018] Furthermore, an operating handle is provided at one end of the guide rod away from the hinged joint, and an end of the operating handle away from the annular base extends upward.

[0019] Furthermore, the medical double-sided tape is in a ring shape with a circular hole in the center, the circular hole is coaxial with the central hole, and the aperture of the circular hole is not smaller than the aperture of the central hole.

[0020] Beneficial effects of the utility model:

[0021] The utility model marks the puncture point by adhering an annular base with a central hole to the skin around the puncture point, and a splint is provided on both sides of the annular base through the sliding of the base, and the splint is connected to the base by a spring. The resetter on the annular base can make the splints on both sides move away from each other to facilitate the puncture and withdrawal of the puncture needle. The splints on both sides clamp and position the puncture needle under the push of the spring, thereby solving the safety risks and human resource occupation problems of manual clamping of the puncture needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic structural diagram of the needle clamp and resetter of the present utility model;

[0025] Figure 3 This is a structural diagram of the annular base of the utility model;

[0026] Figure 4 This is a schematic diagram of the assembly of the plywood and anti-slip rubber pad of the utility model;

[0027] Figure 5 This is a schematic structural diagram of the plywood of the present utility model;

[0028] Figure 6 This is a structural diagram of the anti-slip rubber pad of the utility model;

[0029] Figure 7 This is a schematic diagram of the assembly of the annular base and the medical double-sided tape of the present invention.

[0030] The numbers in the figure are:

[0031] 1- Ring base; 2- Center hole; 3- Medical double-sided tape; 4- Needle holder; 5- Resetter; 6- Guide groove; 7- Cover plate; 8- Limit hole; 9- Anti-slip rubber pad; 10- Slot; 11- Arc ridge; 12- Bracket; 13- Guide hole; 14- Operating handle; 15- Round hole;

[0032] 401- splint; 402- base; 403- spring;

[0033] 501-connecting rod; 502-guide rod; 503-hinge joint. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0035] like Figures 1 to 7 As shown, a positioning assembly for a thoracentesis needle comprises:

[0036] An annular base 1 is provided with a central hole 2 for the puncture needle to pass through, and the annular base 1 is positioned on the skin around the puncture point by medical double-sided tape 3;

[0037] A needle clamp 4 is provided on the annular base 1 and is used to clamp and position the puncture needle passing through the central hole 2;

[0038] A resetter 5 is provided on the annular base 1 and connected to the needle clamp 4. The resetter 5 is used to restore the needle clamp 4 to its initial state where the puncture needle is not clamped.

[0039] The needle clamp 4 includes a clamping plate 401, a base 402 and a spring 403. A pair of clamping plates 401 are slidably arranged on the annular base 1 through corresponding bases 402, and the central hole 2 is located between the pair of clamping plates 401.

[0040] The spring 403 connects the base 402 and the clamping plates 401 to drive the pair of clamping plates 401 to clamp the puncture needle passing through the central hole 2;

[0041] The reducer 5 is connected to the pair of clamping plates 401 and is used to drive the pair of clamping plates 401 away from each other.

[0042] Before puncturing, medical double-sided tape is applied to the bottom of the annular base 1, and then the center hole 2 of the annular base 1 is aligned with the puncture point, and the annular base 1 is affixed to the patient's skin. After the annular base 1 is affixed and positioned, the resetter 5 is operated to move the pair of splints 401 away from each other, fully exposing the center hole 2. The puncture needle is then operated to pass through the center hole 2 and insert the puncture needle into the patient's body from the puncture point. When the puncture needle is in place, the resetter 5 releases the pair of splints 401, which are driven by the springs 403 on both sides to clamp the puncture needle, thereby achieving the positioning of the puncture needle.

[0043] The utility model marks the puncture point by adhering an annular base 1 with a central hole 2 to the skin around the puncture point, and a splint 401 is provided on both sides of the annular base 1 through a base 402 for sliding. The splint 401 and the base 402 are connected by a spring 403. The resetter 5 on the annular base 1 can make the splints 401 on both sides move away from each other to facilitate the puncture and withdrawal of the puncture needle. The splints 401 on both sides clamp and position the puncture needle under the push of the spring 403, thereby solving the problem of safety hazards and occupation of human resources in manual clamping of the puncture needle.

[0044] Among them, a pair of splints 401 are slidably arranged on both sides of the annular base 1 through two bases 402 respectively. A guide groove 6 is provided on the side of the base 402 close to the center hole 2. A cover plate 7 is provided on the top of the base 402. The splint 401 is slidably plugged into the guide groove 6, and the spring 403 is arranged in the guide groove 6.

[0045] The base 402 with the guide groove 6 is "U"-shaped and is integrally formed on the annular base 1. The splint 401, the groove wall of the guide groove 6, the top of the annular base 1 and the bottom of the cover plate 7 are slidably sealed. The setting of the cover plate 7 facilitates the disassembly and assembly of the spring 403 and realizes the hiding of the spring 403 to avoid the unsightly appearance and easy accumulation of dirt caused by the exposure of the spring 403.

[0046] In addition, the groove wall of the guide groove 6 and one side of the clamping plate 401 are both provided with a limiting hole 8 for the spring 403 to be inserted, so as to prevent the spring 403 from shifting and causing the clamping plate 401 to slide unevenly.

[0047] In addition, an arcuate groove is provided on one side of the splint 401 near the central hole 2, and a non-slip rubber pad 9 is provided on the wall of the arcuate groove. That is, the splint 401 clamps the puncture needle through the non-slip rubber pad 9, which is an elastic pad made of rubber or silicone. When clamping the puncture needle, the elastic non-slip rubber pad 9 can fit the circular contour of the puncture needle, increasing the contact area with the puncture needle, thereby increasing the friction between the puncture needle and the splint 401. The design of the arcuate groove further facilitates the non-slip rubber pad 9 to fit the contour of the puncture needle, thereby facilitating the stable clamping of the puncture needle by the splint 401. At the same time, it avoids the problem of the puncture needle being damaged by the rigid splint 401 directly clamping the puncture needle, which may cause the internal channel of the puncture needle to narrow or even become blocked due to deformation.

[0048] In order to facilitate the disassembly and assembly of the anti-slip rubber pad 9, a slot 10 is provided on the wall of the arc groove, and the back of the anti-slip rubber pad 9 has an arc-shaped convex strip 11 that is plugged into the slot 10, that is, the anti-slip rubber pad 9 is inserted into the slot 10 through the arc-shaped convex strip 11 and installed in the arc groove of the clip.

[0049] The resetter 5 includes a connecting rod 501, a guide rod 502, and a hinged joint 503. The connecting rods 501 are hinged at both ends of the clamping plates 401. The two connecting rods 501 at the same end of a pair of clamping plates 401 are hinged via a hinged joint 503. One end of the guide rod 502 is connected to the hinged joint 503. A bracket 12 is provided on the annular base 1. The bracket 12 has a guide hole 13 defined therein, into which the guide rod 502 is slidably inserted.

[0050] Before puncturing, two fingers are used to pinch the two guide rods 502 together, causing the two connecting rods 501 to push the two clamping plates 401 away from each other. Then, the other hand operates the puncture needle to perform the puncture. When the puncture needle reaches the designated position, the two guide rods 502 are released, causing the two clamping plates 401 to move closer together under the push of the spring 403 until the puncture needle is clamped.

[0051] Furthermore, when the two connecting rods 501 are aligned, they will not rotate under the thrust of the spring 403, thereby maintaining the position of the clamping plate 401 and freeing one hand to operate the guide rod 502. To facilitate moving the two guide rods 502 away from each other after puncture is completed, an operating handle 14 is provided at one end of the guide rod 502 away from the hinged joint 503, with the end of the operating handle 14 extending upward from the annular base 1.

[0052] After the puncture needle is inserted into the patient's body and reaches the designated position, two fingers respectively move the two operating handles 14 away from each other from the inner side of the two operating handles 14 to break the stable state of the two connecting rods 501 at the same end being collinear, so that the two side splints 401 can approach each other under the action of the thrust of the spring 403 until the puncture needle is clamped.

[0053] Among them, the medical double-sided tape 3 is in the shape of a ring with a circular hole 15 in the center. The circular hole 15 is coaxial with the center hole 2, and the aperture of the circular hole 15 is not smaller than the aperture of the center hole 2. The ring-shaped medical double-sided tape 3 can maximize the adhesive area, thereby facilitating the stable adhesion of the annular base 1 to the skin around the puncture point.

[0054] It should be noted that the entire needle tip protection structure is preferably made of aluminum alloy or stainless steel to extend its service life and facilitate disinfection after use.

[0055] It is understood from common technical knowledge that the present invention may be implemented through other embodiments that do not depart from its spirit or essential features. Therefore, the embodiments disclosed above are, in all respects, merely illustrative and not exclusive. All modifications within the scope of the present invention or equivalent to the scope of the present invention are intended to be encompassed by the present invention.

Claims

1. A positioning assembly for a thoracentesis needle, characterized in that: include: An annular base (1) is provided with a central hole (2) for the puncture needle to pass through, and the annular base (1) is positioned on the skin around the puncture point by means of a medical double-sided adhesive tape (3); A needle clamp (4) is provided on the annular base (1) and is used to clamp and position the puncture needle passing through the central hole (2); A resetter (5) is provided on the annular base (1) and is connected to the needle clamp (4), and the resetter (5) is used to restore the needle clamp (4) to an initial state in which the puncture needle is not clamped; The needle clamp (4) comprises a clamp (401), a base (402) and a spring (403), wherein a pair of clamps (401) are slidably arranged on the annular base (1) through corresponding bases (402), and the center hole (2) is located between the pair of clamps (401); The spring (403) connects the base (402) and the clamp (401) to drive a pair of the clamps (401) to clamp the puncture needle passing through the central hole (2); The resetter (5) is connected to a pair of clamping plates (401) and is used to drive the pair of clamping plates (401) away from each other.

2. A thoracentesis needle positioning assembly according to claim 1, characterized in that: A pair of the clamping plates (401) are respectively slidably arranged on both sides of the annular base (1) through two bases (402); a guide groove (6) is provided on one side of the base (402) close to the center hole (2); a cover plate (7) is provided on the top of the base (402); the clamping plates (401) are slidably plugged into the guide groove (6), and the spring (403) is arranged in the guide groove (6).

3. A thoracentesis needle positioning assembly according to claim 2, characterized in that: The groove wall of the guide groove (6) and one side of the clamping plate (401) are both provided with a limiting hole (8) for the spring (403) to be inserted.

4. A thoracentesis needle positioning assembly according to claim 1, characterized in that: An arc-shaped groove is provided on one side of the clamping plate (401) close to the central hole (2), and a non-slip rubber pad (9) is provided on the wall of the arc-shaped groove.

5. A thoracentesis needle positioning assembly according to claim 4, characterized in that: A slot (10) is provided on the wall of the arc-shaped slot, and the back of the anti-slip rubber pad (9) has an arc-shaped convex strip (11) plugged into the slot (10).

6. A thoracentesis needle positioning assembly according to claim 1, characterized in that: The resetter (5) comprises a connecting rod (501), a guide rod (502) and a hinge joint (503); both ends of the splint (401) are hinged with a connecting rod (501); the two connecting rods (501) at the same end of a pair of splints (401) are hinged through a hinge joint (503); and one end of the guide rod (502) is connected to the hinge joint (503); A bracket (12) is provided on the annular base (1), the bracket (12) is provided with a guide hole (13), and the guide rod (502) is slidably plugged into the guide hole (13).

7. A thoracentesis needle positioning assembly according to claim 6, characterized in that: An operating handle (14) is provided at one end of the guide rod (502) away from the hinge joint (503), and an end of the operating handle (14) away from the annular base (1) extends upward.

8. A thoracentesis needle positioning assembly according to claim 1, characterized in that: The medical double-sided tape (3) is in the shape of a ring with a circular hole (15) at the center. The circular hole (15) is coaxial with the central hole (2), and the aperture of the circular hole (15) is not smaller than the aperture of the central hole (2).

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