Height-adjustable Ommaya extracapsular drainage puncture needle

Abstract

The utility model discloses a height-adjustable Ommaya extracapsular drainage puncture needle which comprises a puncture needle body and a fixing assembly. The puncture needle is provided with a bending part; the fixing assembly comprises a protection base, a height adjusting piece and a base. The protection seat is provided with a first connecting piece, the base is provided with a second connecting piece, and the first connecting piece and the second connecting piece are hollow and are communicated to form a channel; the height adjusting piece is used for connecting the first connecting piece and the second connecting piece and adjusting the relative distance between the two connecting pieces; the bending part of the puncture needle is fixed in the protection seat, and the needle point penetrates out of the bottom of the base through the channels of the first connecting piece and the second connecting piece; the base is provided with a flexible fixing piece, and the flexible fixing piece is used for being fixedly connected with the scalp. The utility model can effectively solve the problem of fixation of the Ommaya extracapsular drainage puncture needle, maintain the stability of the puncture part, enable the drainage operation to be more convenient, and reduce the infection probability.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to an Ommaya extracapsular drainage puncture needle with adjustable height. Background Art

[0002] The intraventricular Ommaya capsule is usually a mushroom-shaped reservoir buried under the scalp. The dome of the reservoir is made of thickened silicone and can be used for multiple self-sealing punctures. After the Ommaya capsule is implanted, it needs to be punctured and connected to an external drainage device. Since there is currently no dedicated drainage puncture needle suitable for the Ommaya capsule, a scalp needle for infusion is generally used clinically. The clinical physician then manually bends the needle to form a right-angle curved puncture needle based on visual references such as the scalp thickness and the thickness of the Ommaya reservoir. The needle tip is inserted into the capsule, and the bent part is fixed to the scalp surface with tape. This operation has certain disadvantages:

[0003] 1. When manually bending an infusion needle, it is often necessary to manually estimate the length of the bent front end. If it is too long, it is easy to penetrate the reservoir, and if it is too short, it will not reach the reservoir, and the length is difficult to control;

[0004] 2. After puncture, the tail of the curved needle and the connector cannot be fixed, and the part hanging in the air on the scalp is prone to breakage. Even on the surface of the scalp, the puncture needle is difficult to fix and may easily shift or slip, resulting in insufficient connection between the fluid reservoir and the drainage tube, leading to the ineffectiveness of the Ommaya capsule. In severe cases, the puncture needle may be contaminated and cause intracranial infection. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an Ommaya extracapsular drainage puncture needle with adjustable height, thereby solving the problems in the above-mentioned background technology.

[0006] The technical solution adopted by the utility model to solve the technical problem is: providing an Ommaya extracapsular drainage puncture needle with adjustable height, including a puncture needle and a fixing assembly;

[0007] The puncture needle is provided with a bending portion; the fixing assembly includes a protective seat, a height adjustment member and a base; the protective seat is provided with a first connecting member, and the base is provided with a second connecting member, the first connecting member and the second connecting member are hollow inside and are connected to form a channel; the height adjustment member is used to connect the first connecting member and the second connecting member and adjust the relative distance between the two; the bending portion of the puncture needle is fixed in the protective seat, and the needle tip passes through the bottom of the base via the channel of the first connecting member and the second connecting member; the base is provided with a flexible fixing plate, and the flexible fixing plate is used to be fixedly connected to the scalp.

[0008] In the utility model, a protrusion is provided at the end of the first connecting member, and the protrusion is inserted into the channel of the second connecting member.

[0009] In the utility model, the side wall of the convex column is provided with a rib, and the second connecting member is provided with a groove matched with the rib.

[0010] In the present invention, the first connecting member and the second connecting member are tubes provided with external threads, and the height adjusting member is a nut provided with internal threads.

[0011] In the utility model, the first connecting member or the second connecting member is provided with an external threaded limiting ring.

[0012] In the utility model, an embedding groove is provided in the protection seat, and the bent portion of the puncture needle is embedded in the embedding groove.

[0013] In the utility model, a receiving groove is provided on the side wall of the protection seat, and the connector of the puncture needle is fixed in the receiving groove.

[0014] In the utility model, the flexible fixing sheet extends sideways from the lower end surface of the base and is sewed or attached to the surface of the scalp.

[0015] Compared with the background technology, this technical solution has the following advantages:

[0016] 1. This solution adopts a connection method of a first connecting member, a height adjusting member, and a second connecting member. By rotating the height adjusting member, the height (relative position) between the first connecting member and the second connecting member can be adjusted, thereby lengthening or shortening the internal channel to adjust the puncture depth of the puncture needle;

[0017] 2. This solution uses the limiting mode of ribs and grooves to ensure that the protective seat and the base do not rotate during the rotation of the height adjustment member, thereby avoiding unnecessary damage to the drainage tube or scalp;

[0018] 3. In this solution, a flexible fixing sheet is provided on the lower end surface of the base, which can adapt to the scalp surface of different head shapes and facilitate suturing or pasting to fix the device;

[0019] 4. This solution fixes the bent part of the puncture needle through the protective seat to prevent the puncture needle from breaking, and further fixes the connector part to ensure the stability of the puncture needle and avoid contamination and infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 This is the overall structure diagram of Example 1;

[0022] Figure 2 is a cross-sectional view of Example 1;

[0023] Figure 3 This is a split structure diagram of Example 1;

[0024] Figure 4 This is the overall structure diagram of Example 2.

[0025] Among them, 1-puncture needle, 11-bending part, 12-connector, 13-needle tip, 2-protective seat, 21-first connecting piece, 22-convex column, 23-rib, 24-accommodating groove, 3-height adjustment piece, 4-base, 41-flexible fixing plate, 42-second connecting piece, 43-groove. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. In the description of the utility model, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0027] Example 1

[0028] An Ommaya extracapsular drainage puncture needle with adjustable height in this embodiment includes a puncture needle 1 and a fixing assembly;

[0029] The puncture needle 1 is provided with a bending portion 11, so that the needle tip 13 is at a right angle to the straight line where the connector 12 is located, and the connector 12 is used to connect the drainage tube;

[0030] The fixing assembly includes a protective seat 2, a height adjustment member 3 and a base 4; the protective seat 2 is provided with a first connecting member 21, and the base 4 is provided with a second connecting member 42. The first connecting member 21 and the second connecting member 42 are hollow inside and are connected to form a channel; the height adjustment member 3 is used to connect the first connecting member 21 and the second connecting member 42 and adjust the relative distance between them; the base 4 is provided with a flexible fixing sheet 41, and the flexible fixing sheet 41 is used to be fixedly connected to the scalp. The bending portion 11 of the puncture needle 1 is fixed in the protective seat 2, and the needle tip 13 passes through the bottom of the base 4 through the channel of the first connecting member 21 and the second connecting member 42, and then pierces the scalp.

[0031] In this embodiment, the first connecting member 21 and the second connecting member 42 are tubes with external threads, the height adjusting member 3 is a nut with internal threads, and the first connecting member 21 or the second connecting member 42 is provided with an external thread limit ring. The distance between the two tubes is adjusted by rotating the nut, thereby adjusting the length of the needle tip 13 passing through the bottom of the base 4, that is, the puncture depth.

[0032] To ensure stability, a boss 22 is provided at the end of the first connecting member 21, and the boss 22 is inserted into the channel of the second connecting member 42. The side wall of the boss 22 is provided with a rib 23. The second connecting member 42 is provided with a groove 43 adapted to the rib 23. The length of the boss 22 is the travel distance. At the same time, during the rotation of the height adjustment member 3, the protective seat 2 and the base 4 do not rotate therewith.

[0033] The flexible fixing sheet 41 extends sideways from the lower end surface of the base 4 and can be fixed and sutured at four corners or directly attached to the scalp surface.

[0034] Example 2

[0035] The difference between Example 2 and Example 1 is that an embedding groove is provided in the protection seat, and the bent portion of the puncture needle is embedded in the embedding groove. In addition, a receiving groove 24 is provided on the side wall of the protection seat, and when the bent portion 11 of the puncture needle 1 is located relatively high, the connector 12 of the puncture needle can be fixed in the receiving groove to increase the stability of the puncture needle.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An Ommaya extracapsular drainage puncture needle with adjustable height, characterized in that: Includes a puncture needle and a fixation assembly; The puncture needle is provided with a bending portion; the fixing assembly includes a protective seat, a height adjustment member and a base; the protective seat is provided with a first connecting member, and the base is provided with a second connecting member, the first connecting member and the second connecting member are hollow inside and are connected to form a channel; the height adjustment member is used to connect the first connecting member and the second connecting member and adjust the relative distance between the two; the bending portion of the puncture needle is fixed in the protective seat, and the needle tip passes through the bottom of the base via the channel of the first connecting member and the second connecting member; the base is provided with a flexible fixing plate, and the flexible fixing plate is used to be fixedly connected to the scalp.

2. The height-adjustable Ommaya extracapsular drainage puncture needle according to claim 1, characterized in that: A protrusion is provided at the end of the first connecting member, and the protrusion is inserted into the channel of the second connecting member.

3. The height-adjustable Ommaya extracapsular drainage puncture needle according to claim 2, characterized in that: The side wall of the convex column is provided with a rib, and the second connecting member is provided with a groove matched with the rib.

4. The height-adjustable Ommaya extracapsular drainage puncture needle according to claim 1, characterized in that: The first connecting member and the second connecting member are tubes with external threads, and the height adjusting member is a nut with internal threads.

5. The height-adjustable Ommaya extracapsular drainage puncture needle according to claim 4, characterized in that: The first connecting member or the second connecting member is provided with an external thread limiting ring.

6. The height-adjustable Ommaya extracapsular drainage puncture needle according to claim 1, characterized in that: An embedding groove is arranged in the protection seat, and the bent portion of the puncture needle is embedded in the embedding groove.

7. The height-adjustable Ommaya extracapsular drainage puncture needle according to claim 1, characterized in that: The side wall of the protection seat is provided with a receiving groove, and the connector of the puncture needle is fixed in the receiving groove.

8. The height-adjustable Ommaya extracapsular drainage puncture needle according to claim 1, characterized in that: The flexible fixing sheet extends sideways from the lower end surface of the base and is sewed or attached to the surface of the scalp.

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