CN219070556U - Puncture needle - Google Patents

Abstract

The present disclosure relates to the technical field of medical devices, and in particular, to a puncture needle. The puncture needle comprises a needle sleeve, a needle seat arranged at the end part of the needle sleeve and a needle core, wherein the needle core is movably arranged in the needle sleeve in a penetrating way, the needle core comprises a hollow needle body, a connecting piece and a needle point are respectively arranged at two parts of the needle body, and the needle core can be switched between a puncture state and an injection state; in the injection state, the connecting piece is abutted with the needle seat, and the needle point is exposed out of the needle sleeve; in the observation state, the connecting piece is separated from the needle seat, and the needle point is retracted into the needle sleeve; the connecting piece includes the body and sets up a plurality of joints on the body, and the body communicates with the needle body is inside, and a plurality of joints communicate with the body is inside. By implementing the technical scheme disclosed by the utility model, the problem that the injector is frequently replaced in the treatment of treating liver cirrhosis and gastric fundus varicose bleeding by tissue glue injection under an endoscope by a surgeon can be solved, and the operation efficiency is improved. Avoiding infection caused by repeatedly replacing the injector and improving the aseptic technique.

Description

Puncture needle

Technical Field

The present disclosure relates to the technical field of medical devices, and in particular, to a puncture needle.

Background

Cirrhosis is a late stage of development of various chronic liver diseases, esophageal gastric fundus varices rupture bleeding is one of the most common and serious complications, the disease is dangerous, the bleeding rate is high, repeated bleeding is difficult to stop bleeding, and the prognosis mortality rate of main death causes of digestive tract bleeding is extremely high. Surgical bypass or flow break surgery has a certain therapeutic effect, but the general physical state of patients with cirrhosis is generally poor and has limited tolerance to the treatment method, and has great surgical risks.

The treatment of the tissue gel injection under the endoscope for treating the liver cirrhosis and the varicose vein hemorrhage is an important measure for preventing the varicose vein rupture hemorrhage at the bottom of the esophagus and the stomach, has extremely low postoperative recurrence hemorrhage rate of patients with better compliance, and is an ideal scheme for effectively controlling the varicose vein hemorrhage at the bottom of the stomach. However, in the prior art, the tissue glue can be quickly solidified, so that the whole operation is required to be performed in a acquiescent way, various medicines are required to be injected in the operation process, and an operator is required to constantly replace the injector to perform the injection of the medicine targeted vein, which is not beneficial to the operation. Repeated replacement of the syringe is also detrimental to aseptic operation. The needle head of the conventional puncture injection needle is always exposed outside and is easy to scratch the mucous membrane of the tissue.

At present, a puncture needle is urgently needed to solve the problem that an operator needs to frequently replace an injector in the treatment of cirrhosis, gastric fundus varicose bleeding by tissue glue injection under an endoscope, and the operation efficiency is improved. Avoiding infection caused by repeatedly replacing the injector and improving the aseptic technique.

Disclosure of Invention

In order to solve the technical problems described above or at least partially solve the technical problems described above, the present disclosure provides a puncture needle, including a needle sheath, a needle seat provided at an end of the needle sheath, and a needle core movably penetrating into the needle sheath, wherein the needle core includes a hollow needle body, two ends of the needle body are respectively provided with a connecting piece and a needle tip, and the needle core can be switched between an observation state and an injection state;

in the injection state, the connecting piece is abutted with the needle seat, and the needle point is exposed out of the needle sleeve; in the viewing state, the connector is separated from the needle seat, and the needle tip is retracted into the needle sleeve;

the connecting piece comprises a body and a plurality of joints arranged on the body, wherein the body is communicated with the inside of the needle body, and the joints are communicated with the inside of the body.

Optionally, the head-end inlets of the connectors are arranged in a row at intervals, the connectors are provided with independent liquid channels, and the liquid channels are converged at the tail end and communicated with the body.

Optionally, a plurality of the connectors are disposed on two sides of the body, and connectors for connecting the syringes are independently disposed on the body.

Optionally, the outer side wall of the connecting piece is provided with a casing component, the casing component comprises a limiting piece and a casing, the casing is connected with the connecting piece through the limiting piece, the casing is provided with a containing groove for containing the syringe, a clamping piece capable of limiting the syringe to be separated from the containing groove is arranged in the containing groove, and the limiting piece is used for limiting the syringe to be separated from the connector after being connected with the connector.

Optionally, the number of the connectors is three.

Optionally, a push-pull collar is provided on a side wall of the needle hub, the push-pull collar being configured to provide an operator with a point of finger engagement when transitioning between the injection state and the viewing state.

Optionally, a plurality of connectors are provided with extension hoses, and the extension hoses are used for being connected with the injector.

Optionally, a plurality of the connectors are provided with marks on the outer side wall.

Compared with the prior art, the beneficial effects of the present disclosure are: the needle core can be switched between an observation state and an injection state to avoid the problem that the conventional puncture needle is always exposed outside and is easy to scratch a tissue mucous membrane; the problem that a user needs to frequently replace the injector in the treatment of treating liver cirrhosis and gastric fundus varicose bleeding by tissue glue injection under an endoscope is solved by the connecting piece with the plurality of connectors, and the operation efficiency is improved. The multiple joints can be independently connected with various liquid medicines required in the operation, so that the infection caused by repeatedly replacing the syringe is avoided, and the aseptic technique is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings may be obtained from these drawings without inventive effort.

FIG. 1 is a schematic view of an injection state according to a first embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a second embodiment of the present disclosure;

FIG. 3 is a schematic structural view of a connector and a body according to a second embodiment of the present disclosure;

FIG. 4 is a schematic structural view of a connector according to a second embodiment of the present disclosure;

fig. 5 is a schematic view of the structure of the hub and push-pull collar of the present disclosure;

FIG. 6 is a schematic view of the construction of a second embodiment of the connecting sleeve assembly of the present disclosure;

FIG. 7 is a schematic view of a housing assembly according to a second embodiment of the present disclosure;

fig. 8 is a schematic structural view of the observation state of the first embodiment of the present disclosure.

Wherein, 1-the needle sleeve; 2-a needle stand; 3-a needle core; 31-needle body; 32-a connector; 321-body; 322-joint 323-reverse flow baffle; 33-needle tip; a-a housing assembly; b-limiting parts; c-a casing; d-push-pull collar.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.

The treatment of the tissue gel injection under the endoscope for treating the liver cirrhosis and the varicose vein hemorrhage is a traditional Chinese medicine measure for preventing the varicose vein rupture hemorrhage at the bottom of the esophagus and the stomach, has extremely low postoperative recurrence hemorrhage rate of patients with better compliance, and is an ideal scheme for effectively controlling the varicose vein hemorrhage at the bottom of the stomach. However, in the prior art, the tissue glue can be quickly solidified, so that the whole operation is required to be performed in a acquiescent way, various medicines are required to be injected in the operation process, and an operator is required to constantly replace the injector to perform the injection of the medicine which is required to target the vein, thereby being unfavorable for the operation. The return replacement of the syringe is also detrimental to aseptic operation.

Based on this, the embodiment of the disclosure provides a puncture needle, which can solve the problem that a user needs to frequently replace an injector in the treatment of treating liver cirrhosis and gastric fundus varicose bleeding by tissue glue injection under an endoscope, and improves the operation efficiency. Avoiding infection caused by repeatedly replacing the injector and improving the aseptic technique.

The puncture needle will be described in detail by way of specific examples:

referring to fig. 1 to 3, the present disclosure provides a puncture needle, which comprises a needle sleeve 1, a needle seat 2 arranged at the end of the needle sleeve 1, and a needle core 3, wherein the needle sleeve 1 and the needle core 3 of the present disclosure are made of a hose with good deformability and bending capability, such as rubber, PVC and other materials. The needle core 3 is movably arranged in the needle sleeve 1 in a penetrating way, the needle core 3 can push and pull relative to the needle sleeve 1, the needle core 3 comprises a hollow needle body 31, two of the needle bodies are respectively provided with a connecting piece 32 and a needle point 33, the main function of the needle body 31 is to provide a conveying channel for liquid medicine, and the length of the needle body 31 is longer than that of the needle sleeve 1, so that the needle core 3 can be switched between an observation state and an injection state;

in the injection state, the connector 32 is abutted with the needle seat 2, and the needle tip 33 is exposed out of the needle sleeve 1; in the observation state, the connecting piece 32 is separated from the needle seat 2, and the needle tip 33 is retracted into the needle sleeve 1; the length of the needle hub 1 and needle body 31 of the present disclosure is dependent on the length of the lumen tubing.

In order to enable the syringe to be replaced infrequently during operation, improve the operation efficiency and strengthen the aseptic operation, the connector 32 of the present disclosure is provided with a plurality of connectors 322 on a body 321, the body 321 is communicated with the inside of the needle body 31, and the connectors 322 are communicated with the inside of the body 321. Each connector 322 may be connected to a syringe for drawing the corresponding medical fluid, for example, by injecting the patient in a sandwich-type injection method, three 5 ml syringes are prepared, two of which are filled with 5 ml iodized oil or 5% high sugar, and one of which is used for drawing 2-3 ml tissue glue. In this method, 1.2ml of iodized oil or high sugar is injected into a vein according to the injection point of the (target vein), and the injector is exchanged in a short time, a proper amount of tissue gel is pushed into the vein, and the injection needle number and the tissue gel amount are calculated according to the volume of the varicose vein, based on the substantially full tissue gel of the varicose vein. Then another syringe was connected to push in 1.4ml of iodized oil or high sugar into the patient. The needle is withdrawn and the sheath is returned immediately after the injection is completed. The needle is withdrawn after being pressed against its eye for about 15 seconds using the needle sheath head. Through the connector of this disclosure can set up three joints 322 on body 321 (including body 321), and every connects and connects a liquid medicine and inject according to the operation standard, and is further, can set up the instruction sign on every joint, and this instruction sign can use different colours to distinguish, also can carry out the serial number of operation order and distinguish to satisfy the convenience of operation.

The specific arrangement of the joint 322 is described in detail below:

in a first implementation of the present disclosure, the number of the joints 322 is three, one of the joints is disposed on the inlet of the body 321, the other two joints 322 are disposed on the outer sidewall of the body 321, and the three joints 322 thereof form a three-fork structure. Wherein, two joints 322 arranged on the side wall of the body 321 are arranged in a height difference manner, so that the problem of liquid backflow can be reduced. Furthermore, the anti-reflux valve, the check valve and other structures can be selected for anti-reflux aiming at the reflux problem of the liquid, and the anti-reflux valve and the check valve are conventional technical schemes and are not repeated.

In the second embodiment of the present disclosure, the head-end inlets of the connectors 322 are arranged in a row at intervals, as shown in fig. 2, and the number of the connectors 322 is three as an example, and the connectors have independent liquid channels, and the liquid channels converge at the tail end and are communicated with the body 321. According to the embodiment, the problems that after the first embodiment is connected with the syringes, the plurality of syringes form a sector, the occupied area is too large, and the operation is inconvenient can be solved. According to the technical scheme of the second embodiment, after the syringes are connected, three syringes can be formed into a row, so that the handheld operation is convenient. As shown in fig. 4, in the technical solution of the second embodiment, the channels of the plurality of connectors 322 are parallel and then converge, so that backflow of the liquid medicine is relatively easy to occur, and for this purpose, a non-return treatment may be performed.

In the first and second embodiments of the present disclosure, the syringe may be connected to the connector 322 and then shake or fall off. To this end, the present disclosure provides a housing assembly a on an outer sidewall of the connection member 32, and the housing assembly a includes a stopper B and a housing C, the housing C is connected with the connection member 32 through the stopper B, wherein the housing C is provided with a receiving groove for receiving the syringe, the syringe is placed in the receiving groove when in use, and a clip capable of restricting the syringe from being separated from the receiving groove is provided in the receiving groove, and the clip may be a band, a buckle, a baffle, or the like. The stopper of the present disclosure is used to restrict the syringe from being disconnected from the adapter 322 after being connected to the adapter 322. The limiting member 32 may be provided as a clip for wrapping the connecting member 32, or may be a plurality of nut joints provided at one end of the casing C, the nut joints being connected to the outlet of the syringe inside the casing C, and threads being provided on the joints 322 of the connecting member 32 on the outside, and the nut joints being embedded in the joints 322, the nuts on the nut joints being rotatable in the direction of the joints 322, and the threaded engagement on the joints 322 fixing the casing C to the connector 32. In the first embodiment, the housing groove of the case C is manufactured according to the form of the first embodiment after the syringe is attached. The shape of the casing C can be made into an ergonomic shape according to the anatomical structure of the human hand, so as to be convenient for hand holding.

In some embodiments, to avoid rigid connection of the syringe to the connector 322, the plurality of connectors 322 of the present disclosure are provided with extension hoses for connection to the syringe. The extension hose is not easy to be overlong so as not to cause too slow liquid approaching speed of the liquid medicine.

In a preferred embodiment of the present disclosure, a push-pull collar D is provided on the sidewall of the hub 2 for providing an operator with a point of finger engagement when transitioning between the injection and viewing states. The push-pull sleeve ring C can be in a closed loop form or can be provided with an opening and the like capable of allowing fingers to pass through, and is mainly characterized in that an operator can provide a force point when the push-pull needle seat 2 is switched between an observation state and an injection state, so that the operation is convenient.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. The puncture needle is characterized by comprising a needle sleeve (1), a needle seat (2) arranged at the end part of the needle sleeve (1) and a needle core (3), wherein the needle core (3) is movably arranged in the needle sleeve (1),

the needle core (3) comprises a hollow needle body (31), a connecting piece (32) and a needle point (33) are respectively arranged at two ends of the needle body (31), and the needle core (3) can be switched between an observation state and an injection state;

in the injection state, the connecting piece (32) is abutted with the needle seat (2), and the needle point (33) is exposed out of the needle sleeve (1); in the viewing state, the connector (32) is separated from the needle seat (2), and the needle tip (33) is retracted into the needle sleeve (1);

the connecting piece (32) comprises a body (321) and a plurality of joints (322) arranged on the body (321), wherein the body (321) is communicated with the inside of the needle body (31), and the joints (322) are communicated with the inside of the body (321).

2. The puncture needle according to claim 1, characterized in that the head inlets of the plurality of connectors (322) are arranged in a row at intervals, and the plurality of connectors have independent liquid passages, and the plurality of liquid passages converge at the tail end to communicate with the body (321).

3. The puncture needle according to claim 1, characterized in that a plurality of the connectors (322) are provided on both sides of the body (321), and connectors for connecting the syringe are independently provided on the body (321).

4. The puncture needle according to claim 1, characterized in that a housing assembly (a) is provided on the outer side wall of the connecting member (32), the housing assembly (a) comprises a limiting member (B) and a housing (C), the housing (C) is connected with the connecting member (32) through the limiting member (B), the housing (C) is provided with a receiving groove for accommodating the syringe, a clamping member capable of limiting the syringe from being separated from the receiving groove is provided in the receiving groove, and the limiting member is used for limiting the syringe from being separated from the joint (322) after being connected with the joint (322).

5. The puncture needle according to claim 1, characterized in that the number of the connectors (322) is three.

6. A needle as claimed in claim 1, characterized in that a push-pull collar (D) is provided on the side wall of the hub (2), said push-pull collar (D) being adapted to provide the operator with a point of finger engagement when switching between the injection state and the viewing state.

7. The needle of claim 1, wherein a plurality of said connectors (322) are provided with extension hoses for connection to a syringe.

8. The needle of claim 1, wherein a plurality of said connectors (322) are provided with indicia on an outer sidewall thereof.

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