Puncture outfit for subarachnoid space block anesthesia

Abstract

The invention relates to the technical field of medical instruments, and particularly discloses a puncture outfit for subarachnoid space block anesthesia. The limiting mechanism is inserted into the guiding device; the puncture needle core seat is inserted into the limiting mechanism; through the arrangement of a mounting plate, a coil spring, a limiting plate and a winding wheel, when an operator pushes a limiting insertion rod, the limiting insertion rod breaks away from the limiting effect on the limiting plate, at the moment, elastic potential energy stored between the winding wheel and the coil spring is released, and the winding wheel starts to automatically and rapidly rotate under the driving of torsional force of the coil spring; by means of the automatic winding mechanism, the stabbing injury risk caused by accidental falling or collision of the needle core is fundamentally eliminated, reliable safety protection is provided for medical staff, and occupational exposure hidden dangers are remarkably reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of medical devices, and particularly relates to a puncture device for subarachnoid block anesthesia. BACKGROUND

[0002] The arachnoid anesthesia puncture device is a medical device for subarachnoid anesthesia, which is mainly used for injecting local anesthetic into the subarachnoid space to block part of the spinal nerve conduction function, so that the corresponding region produces an anesthetic effect, and is commonly used for operations on the lower abdomen, pelvic cavity and lower limbs, and is commonly made of stainless steel and some products have a nano coating to improve smoothness and reduce patient discomfort.

[0003] The existing arachnoid puncture needle cannot be hidden in the guide device, the needle tip is exposed during the whole operation, the thin needle needs to be manually pushed into the end of the guide device after the epidural puncture is successful, which not only prolongs the operation steps, but also increases the risk of accidental touch due to the exposed needle tip, and the puncture needle is easy to burst between the syringe and the puncture needle if the drug pushing speed is too fast, and there is no automatic winding protection mechanism after the needle core is pulled out, the arachnoid puncture needle needs to pull out the needle core to complete the drug delivery after completing the anesthesia drug injection, but the current device has no built-in storage structure, the pulled-out needle core is mostly manually fixed or temporarily placed, which is easy to cause accidental collision and thus hurt medical staff and cause occupational exposure risk. SUMMARY

[0004] The purpose of the present application is to provide a puncture device for subarachnoid block anesthesia to solve the problem that the existing puncture needle cannot hide the subarachnoid puncture needle in the guide device, cannot avoid the subarachnoid puncture needle from contacting the skin, and cannot automatically wind the needle core after pulling it out, which is easy to hurt medical staff.

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] A puncture device for subarachnoid block anesthesia, comprising:

[0007] a guide device;

[0008] a limiting mechanism inserted in the interior of the guide device;

[0009] a puncture needle core seat inserted in the interior of the limiting mechanism;

[0010] a puncture needle core body inserted in the interior of the puncture needle core seat;

[0011] The inside of the puncture needle core seat is provided with a winding mechanism, the winding mechanism comprises a mounting plate, a coil spring and a limiting plate, the mounting plate is fixedly connected to the inner side wall of the puncture needle core seat, the outer side of the mounting plate is fixedly connected with the coil spring, the outer side of the coil spring is fixedly connected with the limiting plate, the outer side of the limiting plate is fixedly connected with a winding wheel, a sliding groove is formed in the outer side wall of the puncture needle core seat, and a limiting plug rod is inserted into the sliding groove.

[0012] Preferably, the limiting plug rod is slidingly connected in the sliding groove, and the limiting plug rod is inserted through the inside of the mounting plate and the limiting plate.

[0013] Preferably, the limiting plate and the coil spring are elastically connected, and the outer side of the winding wheel is connected with a puncture needle core body.

[0014] Preferably, the outer side of the guide is fixedly connected with a guide needle, the outer side walls of the guide and the limiting mechanism are provided with a mark block, and the outer side of the limiting mechanism is fixedly connected with a subarachnoid puncture needle.

[0015] Preferably, the limiting mechanism comprises a puncture needle seat, an insertion groove and an abutting seat, the inside of the puncture needle seat is provided with the insertion groove, the inner side wall of the insertion groove is fixedly connected with the abutting seat, and the inner side wall of the insertion groove is provided with a limiting plug needle.

[0016] Preferably, the abutting seat is triangular, and the abutting seat is abutted on the outer side of the puncture needle core seat.

[0017] Preferably, the limiting plug needle and the insertion groove are elastically movably connected, a plurality of limiting plug needles are arranged on the inner side wall of the insertion groove, and the limiting plug needle is a sharp-end stainless steel needle.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] (1) The mounting plate, the coil spring, the limiting plate and the winding wheel are arranged, so that when the operator pushes the limiting plug rod, the limiting plug rod is separated from the limiting effect on the limiting plate, at this time, the elastic potential energy stored between the winding wheel and the coil spring is released under the driving of the torsional force of the coil spring, the winding wheel starts to rotate automatically and quickly, thereby driving the puncture needle core body wound on the outer side of the winding wheel to be wound in order, this process enables the puncture needle core body to be automatically stored on the winding wheel immediately after being pulled out of the puncture needle core seat and not being used, effectively avoiding the exposure of the puncture needle core body, and fundamentally eliminating the risk of being pricked due to accidental falling or collision of the needle core, thereby providing reliable safety protection for medical staff and significantly reducing the risk of occupational exposure.

[0020] (2) The present application is provided with a puncture needle seat, an insertion slot, an abutting seat and a limiting needle, so that when the puncture needle core seat is pulled out of the insertion slot, a syringe needs to be inserted into the insertion slot to perform drug injection operation. During the process of inserting the syringe needle into the insertion slot, the limiting needle will first contact the outer wall of the syringe needle tube and form an abutment. With the continuous deepening of the syringe head into the insertion slot, a sealed butt joint is finally realized, ensuring the airtightness of the drug injection process. In particular, when the speed of bolus injection is too fast, causing the internal pressure to increase suddenly, the syringe head is subjected to a reverse extrusion force and tends to move outward, the limiting needle arranged at a specific angle can form a stable clamping with the syringe head. This design makes the connection between the syringe and the insertion slot more firm, effectively inhibits the risk of accidental disconnection of the syringe, thereby avoiding the phenomenon of separation and explosion of the syringe and the limiting mechanism caused by pressure impact, and significantly improves the safety and stability of the injection process. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0022] Figure 2 is a schematic diagram of the three-dimensional structure of the present application;

[0023] Figure 3 is a schematic diagram of the three-dimensional structure of the present application; Figure 1 is a schematic diagram of the structure of the limiting mechanism in the present application;

[0024] Figure 4 is a schematic diagram of the structure of the limiting mechanism in the present application; Figure 2 is a schematic diagram of the structure of the winding mechanism in the present application.

[0025] In the figure: 1, guide; 2, limiting mechanism; 201, puncture needle seat; 202, insertion slot; 203, abutting seat; 204, limiting needle; 3, puncture needle core seat; 4, guide needle; 5, marker block; 6, subarachnoid puncture needle; 7, puncture needle core; 8, winding mechanism; 801, mounting plate; 802, coil spring; 803, limiting plate; 804, winding wheel; 805, sliding groove; 806, limiting rod. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0027] Embodiment one:

[0028] Please refer to Figures 1-4 The puncture device for subarachnoid block anesthesia shown in the figure comprises:

[0029] guide 1;

[0030] limiting mechanism 2, which is inserted in the inside of the guide 1;

[0031] piercing needle core seat 3, which is inserted in the inside of the limiting mechanism 2;

[0032] piercing needle core body 7, which is inserted in the inside of the piercing needle core seat 3;

[0033] winding mechanism 8, which is arranged in the inside of the piercing needle core seat 3, and comprises a mounting plate 801, a coil spring 802 and a limiting plate 803, the mounting plate 801 is fixedly connected to the inner side wall of the piercing needle core seat 3, one side of the mounting plate 801 is fixedly connected with the coil spring 802 outside, one side of the coil spring 802 is fixedly connected with the limiting plate 803, one side of the limiting plate 803 is fixedly connected with a winding wheel 804, a sliding groove 805 is arranged on the outer side wall of the piercing needle core seat 3, the limiting plug rod 806 is inserted in the inside of the sliding groove 805 and is slidingly connected with the sliding groove 805, the limiting plug rod 806 is inserted in the inside of the mounting plate 801 and the limiting plate 803, the limiting plate 803 and the coil spring 802 are elastically connected, and the winding wheel 804 is connected with the piercing needle core body 7 outside.

[0034] Specifically, the direction corresponding to the marking block 5 is consistent with the needle tip bevel, so that when the needle is inserted into the body, the direction of the needle tip can be easily observed, the limiting plate 803 and the coil spring 802 have a torsion force, when the limiting plug rod 806 slides, the limiting plug rod 806 is removed from the limiting plate 803, so that the winding wheel 804 can be automatically rotated, thereby realizing the automatic winding of the piercing needle core body 7 on the winding wheel 804, when the piercing needle core seat 3 is inserted in the insertion slot 202, the clamping block on the piercing needle core seat 3 can be abutted on the abutment seat 203, so that the piercing needle core seat 3 will not touch the limiting needle 204, and the limiting needle 204 will not affect the limiting insertion of the piercing needle core seat 3 in the insertion slot 202.

[0035] As can be seen from the above, when the limiting plug rod 806 is pushed, the limiting plug rod 806 can be separated from the limiting operation of the limiting plate 803, so that the torsion force between the limiting plate 803 and the coil spring 802 can drive the winding wheel 804 to automatically rotate, and then the coil spring 802 releases the elastic limiting, so that the winding wheel 804 can be rapidly rotated, the piercing needle core body 7 is automatically wound outside the winding wheel 804, the automatic winding of the piercing needle core body 7 in the piercing needle core seat 3 is realized, and after the piercing needle core body 7 is pulled out and not used, the automatic winding can be realized, so as to prevent the piercing needle core body 7 from injuring medical staff.

[0036] Embodiment two:

[0037] Reference Figure 3 and Figure 4 As shown in the figure, the guide needle 4 is fixedly connected to one side of the guide 1, the guide 1 and the outer side wall of the limiting mechanism 2 are provided with a mark block 5, the limiting mechanism 2 is externally fixedly connected to one side of the subarachnoid puncture needle 6, the limiting mechanism 2 comprises a puncture needle seat 201, an inserting groove 202 and an abutting seat 203, the inserting groove 202 is formed in the inner part of the puncture needle seat 201, the abutting seat 203 is fixedly connected to the inner side wall of the inserting groove 202, the inner side wall of the inserting groove 202 is provided with a limiting insertion needle 204, the abutting seat 203 is triangular, the abutting seat 203 is abutted to the outer part of the puncture needle core seat 3, the limiting insertion needle 204 is elastically movably connected to the inserting groove 202, the limiting insertion needle 204 is provided with a plurality of limiting insertion needles 204 on the inner side wall of the inserting groove 202, and the limiting insertion needle 204 is a stainless steel needle with a pointed end.

[0038] Specifically, the guide 1 adopts a hard thin-walled needle with an inner diameter of 0.6 mm and a length of 5 cm, which comprises a 4 cm steel needle and a 1 cm plastic needle cap, the guide steel needle part is marked with a scale with 1 cm as a unit, the diameter of the subarachnoid puncture needle 6 is about 0.53 mm, the length of the needle is 10 cm, which comprises a 9 cm steel needle and a 1 cm plastic needle cap, the puncture needle tip is provided with a side hole, the subarachnoid puncture needle 6 is marked at a position 5 cm away from the needle tip, the guide is flush with the needle tip, and the guide is marked with 1 cm with light and shade, which is convenient for the operator to estimate the depth of the needle, the outer part of the guide 1 is provided with a needle sleeve for preventing injury, the needle sleeve is made of hard plastic, which can avoid needle bending and prevent injury, compared with the traditional subarachnoid puncture needle 6, the puncture needle can hide the subarachnoid puncture needle 6 in the guide 1 before puncture, which can avoid the subarachnoid puncture needle 6 from contacting the skin and reduce the infection complications of subarachnoid puncture, and the length of the guide 1 is appropriate, which is thicker than the independent subarachnoid puncture needle 6, and is beneficial to the operator to master the puncture direction.

[0039] As can be seen from the above, when the puncture needle core seat 3 is pulled out of the inside of the inserting groove 202, the inside of the inserting groove 202 needs to be inserted with a syringe for drug injection operation, at this time, the syringe head is inserted into the inside of the inserting groove 202, the limiting insertion needle 204 can be abutted to the outer wall of the syringe needle tube, and when the syringe head continues to be inserted into the inserting groove 202, the syringe head can be sealed and inserted, and the drug injection operation can be performed, when the medicine is pushed too fast, the extrusion force is too large, the syringe head moves outward, and at this time, the limiting insertion needle 204 is inserted at a certain angle on the outside of the syringe head, so that the syringe can be fixedly inserted into the inside of the inserting groove 202, thereby effectively preventing the syringe from being exploded between the limiting mechanism 2.

[0040] The standard parts used in the present application can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings, and the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the mechanical parts and equipment adopt the conventional types in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here. The contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

[0041] In the description of the present application, the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. The meaning of "plurality" is two or more, unless otherwise specifically limited.

[0042] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements or the interaction between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0044] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction

[0045] In the drawings of the embodiments of the present application, only the structures related to the embodiments of the present application are involved, and other structures can be referred to the general design. In the case of no conflict, the same embodiment and different embodiments of the present application can be combined with each other.

[0046] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A puncture device for subarachnoid block anesthesia, characterized in that, include: Guide (1); A limiting mechanism (2) is inserted inside the guide (1); The puncture needle core seat (3) is inserted inside the limiting mechanism (2); The puncture needle core (7) is inserted inside the puncture needle core seat (3); The winding mechanism (8) is provided inside the puncture needle core seat (3). The winding mechanism (8) includes a mounting plate (801), a coil spring (802), and a limiting plate (803). The mounting plate (801) is fixedly connected to the inner side wall of the puncture needle core seat (3). A coil spring (802) is fixedly connected to the outside of one side of the mounting plate (801). A limiting plate (803) is fixedly connected to one side of the coil spring (802). A winding wheel (804) is fixedly connected to one side of the limiting plate (803). A sliding groove (805) is provided on the outer side wall of the puncture needle core seat (3). A limiting rod (806) is inserted into the sliding groove (805).

2. The puncture device for subarachnoid block anesthesia according to claim 1, characterized in that: The limiting rod (806) is slidably connected inside the sliding groove (805), and the limiting rod (806) is inserted through the mounting plate (801) and the limiting plate (803).

3. The puncture device for subarachnoid block anesthesia according to claim 1, characterized in that: The limiting plate (803) and the coil spring (802) are elastically telescopically connected, and the puncture needle core (7) is externally connected to the winding wheel (804).

4. The puncture device for subarachnoid block anesthesia according to claim 1, characterized in that: A guide needle (4) is fixedly connected to one side of the guide (1), and a marker block (5) is provided on the outer side wall of the guide (1) and the limiting mechanism (2). A subarachnoid puncture needle (6) is fixedly connected to one side of the limiting mechanism (2).

5. The puncture device for subarachnoid block anesthesia according to claim 1, characterized in that: The limiting mechanism (2) includes a puncture needle seat (201), an insertion groove (202), and an abutment seat (203). The puncture needle seat (201) has an insertion groove (202) inside. An abutment seat (203) is fixedly connected to the inner side wall of the insertion groove (202). A limiting needle (204) is provided on the inner side wall of the insertion groove (202).

6. The puncture device for subarachnoid block anesthesia according to claim 5, characterized in that: The abutment seat (203) is triangular in shape and abuts against the outside of the puncture needle core seat (3).

7. The puncture device for subarachnoid block anesthesia according to claim 5, characterized in that: The limiting pin (204) is elastically connected to the insertion slot (202). Multiple limiting pins (204) are provided on the inner side wall of the insertion slot (202). The limiting pin (204) is a stainless steel pin with a pointed end.

Images