Egg retrieval needle

Abstract

The utility model discloses an ovum retrieval needle, and particularly relates to the technical field of medical instruments, the ovum retrieval needle comprises a needle tube, one end of the needle tube is provided with a handle, the handle is provided with a connecting tube, one end of the handle, which is opposite to the needle tube, is inserted with a tail cover, and one end of the connecting tube is connected with a suction catheter; a sleeving mechanism is further arranged between the connecting pipe and the suction catheter, the sleeving mechanism comprises a connecting boss arranged at the end of the connecting pipe and a sleeve installed at the end of the suction catheter, the connecting boss is sleeved with the sleeve, a plurality of wedge-shaped grooves are formed in the outer wall of the sleeve, and wedge-shaped columns are inserted into the wedge-shaped grooves; through the arrangement of the sleeving mechanism, the suction catheter and the connecting pipe can be connected in a sleeving mode, so that stable connection between the suction catheter and the connecting pipe is achieved, the suction catheter is prevented from falling off from the connecting pipe, smooth collection of follicles is facilitated, and the success rate of follicle collection is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an egg retrieval needle. Background Art

[0002] At present, in clinical practice, with the increasing number of infertile patients, the use of artificial assisted conception has become an effective medical means. During artificial assisted conception, it is generally necessary to collect follicles from the ovaries of infertile patients using an egg retrieval needle under the guidance of ultrasound, so as to facilitate the subsequent combination of follicles with sperm to achieve the purpose of artificial conception and improve the patient's pregnancy rate.

[0003] In the Chinese patent with the announcement number CN216570152U, an egg retrieval needle is disclosed. A needle core is placed in the needle tube in advance to block the lumen of the needle tube. During the puncture process of the egg retrieval needle, human tissue cannot enter the needle tube. After the egg retrieval needle reaches the surgical target position, the needle core is withdrawn from the egg retrieval needle, and then the channel for inserting the needle core in the handle is blocked with the tail cover. When retrieval of eggs, the egg cells enter the suction catheter from the collection channel through the lumen of the needle tube and then enter the egg cell collection test tube, ensuring that the puncture and egg retrieval operation is carried out smoothly. The egg retrieval needle according to the embodiment of the present application avoids the problem that normal tissue enters the needle tube, resulting in unsmooth or failed egg retrieval, which not only ensures the convenience of operation for medical staff, but also improves the probability of successful egg retrieval operation. However, when the above-mentioned egg retrieval needle is used, one end of the suction catheter is inserted into the third inner hole in the connecting tube to complete the connection of the suction catheter. However, during use, there is a lack of limit between the suction catheter and the connecting tube, which easily causes the suction catheter to fall off from the connecting tube, resulting in egg retrieval failure, which is not conducive to the smooth collection of follicles. Utility Model Content

[0004] The purpose of the utility model is to provide an egg retrieval needle, which can sleeve the suction catheter and the connecting tube through the setting of the sleeve mechanism, thereby achieving a stable connection between the suction catheter and the connecting tube, preventing the suction catheter from falling off the connecting tube, and thus facilitating the smooth collection of follicles, improving the success rate of follicle collection, and solving the above-mentioned deficiencies in the technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an egg retrieval needle, comprising a needle tube, one end of the needle tube is provided with a handle, and a connecting tube is provided on the handle, the handle is plugged with a tail cover relative to one end of the needle tube, and one end of the connecting tube is connected to a suction catheter;

[0006] A sleeve mechanism is also provided between the connecting tube and the suction catheter, and the sleeve mechanism includes a connecting boss provided at the end of the connecting tube, and a sleeve installed at the end of the suction catheter, the sleeve is sleeved on the outside of the connecting boss, and a plurality of wedge-shaped grooves are provided on the outer wall of the sleeve, a plurality of wedge-shaped grooves are each inserted with a wedge-shaped column, and an extension portion is formed at one end of each of the plurality of wedge-shaped columns, and a hole groove for inserting the plurality of extension portions is also provided on the outer wall of the connecting boss.

[0007] Preferably, the sleeve mechanism also includes a pop-up structure, and the pop-up structure includes an annular groove opened at the end of the connecting tube, the annular groove is recessed inward to form a plurality of cavities, and a push ring is arranged in the annular groove, springs are fixed in the plurality of cavities, and one ends of the plurality of springs are commonly connected to one side of the push ring.

[0008] Preferably, a plurality of positioning grooves are formed on one side of the push ring, and a positioning block corresponding to the plurality of positioning grooves is installed at the end of the sleeve.

[0009] Preferably, a connecting mechanism is provided between the handle and the needle tube, and the connecting mechanism includes a connecting tube installed at one end of the handle relative to the tail cover, and a connecting column arranged at one end of the needle tube, one end of the connecting column forms a threaded portion, and a threaded groove matching the threaded portion is formed in the connecting tube.

[0010] Preferably, a first sealing ring is sleeved on the connecting column to seal between the connecting column and the connecting tube.

[0011] Preferably, a second sealing ring is sleeved on the connecting boss to seal between the connecting boss and the sleeve.

[0012] Preferably, a needle tube blade is formed at one end of the needle tube relative to the handle, and the needle tube, the handle and the interior of the connecting tube all form mutually communicating channels.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] 1. Through the setting of the sleeve mechanism, the suction catheter and the connecting tube can be sleeved, so as to achieve a stable connection between the suction catheter and the connecting tube, and prevent the suction catheter from falling off the connecting tube, which is conducive to the smooth collection of follicles and improves the success rate of follicle collection;

[0015] 2. Through the setting of the pop-up structure, after the egg retrieval is completed, the suction catheter can be separated from the connecting tube, thereby realizing the rapid disassembly and assembly of the suction catheter, which is conducive to the replacement of the suction catheter and convenient for use during follicle collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 For this utility model Figure 1 A cross-sectional view of

[0019] Figure 3 For this utility model Figure 1 Exploded diagram of

[0020] Figure 4 For this utility model Figure 3 A schematic diagram of the structure of the middle sleeve;

[0021] Figure 5 For this utility model Figure 2 A in the enlarged view;

[0022] Figure 6 For this utility model Figure 2 The enlarged view of point B in the figure;

[0023] Figure 7 For this utility model Figure 3 Enlarged view of point C in the figure.

[0024] Description of reference numerals:

[0025] 1. Needle tube; 2. Handle; 3. Connecting mechanism; 31. Connecting tube; 32. Connecting column; 33. First sealing ring; 34. Screw connection; 4. Tail cover; 5. Connecting tube; 6. Sleeve connection mechanism; 61. Sleeve; 62. Wedge-shaped column; 63. Wedge-shaped groove; 64. Positioning block; 65. Connecting boss; 66. Hole groove; 67. Second sealing ring; 68. Push ring; 69. Spring; 610. Positioning groove; 7. Suction catheter. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] The utility model provides Figure 1-Figure 7The egg retrieval needle shown comprises a needle tube 1, one end of the needle tube 1 is provided with a handle 2, and a connecting tube 5 is provided on the handle 2, a tail cover 4 is inserted into the end of the handle 2 opposite to the needle tube 1, and one end of the connecting tube 5 is connected to a suction catheter 7; a needle tube blade is formed at the end of the needle tube 1 opposite to the handle 2, and the insides of the needle tube 1, the handle 2 and the connecting tube 5 all form mutually connected channels;

[0028] A sleeve mechanism 6 is also provided between the connecting tube 5 and the suction catheter 7, and the sleeve mechanism 6 includes a connecting boss 65 provided at the end of the connecting tube 5, and a sleeve 61 installed at the end of the suction catheter 7, the sleeve 61 is sleeved on the outside of the connecting boss 65, and a plurality of wedge-shaped grooves 63 are provided on the outer wall of the sleeve 61, a plurality of wedge-shaped grooves 63 are inserted into each of the plurality of wedge-shaped grooves 63, and one end of each of the plurality of wedge-shaped columns 62 forms an extension portion, and a hole groove 66 for inserting a plurality of extension portions is also provided on the outer wall of the connecting boss 65; a second sealing ring 67 is sleeved on the connecting boss 65 to seal it and the sleeve 61.

[0029] When using for egg retrieval, first connect one end of the suction catheter 7 to the connecting tube 5, at this time, the sleeve 61 is sleeved on the connecting boss 65, and the wedge-shaped column 62 is inserted into the wedge-shaped groove 63 to connect the sleeve 61 and the connecting boss 65, so as to complete the stable connection between the suction catheter 7 and the connecting tube 5, and then connect the other end of the suction catheter 7 to the external egg cell collection tube, and connect the external egg cell collection tube to the negative pressure device, and then the medical staff holds the handle 2, punctures the needle tube 1 into the ovary of the infertile patient, and then sucks out the air inside the external egg cell collection tube through the negative pressure device, so that negative pressure is formed in the external egg cell collection tube, so as to suck the follicles in the ovary of the infertile patient through the suction catheter 7 and the needle tube 1, so that the follicles enter the suction catheter 7 through the channel formed by the needle tube 1, the handle 2 and the connecting tube 5, and then are discharged into the external egg cell collection tube, so as to complete the artificial egg retrieval;

[0030] When the egg retrieval is completed and the suction catheter 7 needs to be disassembled, the wedge-shaped column 62 can be pulled out of the wedge-shaped groove 63. At this time, the extension part at one end of the wedge-shaped column 62 is moved out of the hole groove 66, and then the suction catheter 7 is pulled upward to make the sleeve 61 detach from the connecting boss 65, completing the disassembly between the suction catheter 7 and the connecting tube 5, thereby realizing the rapid disassembly and assembly of the suction catheter 7 and facilitating the use of follicle collection.

[0031] At the same time, in this embodiment, in order to facilitate the disassembly and assembly of the suction catheter 7, as shown in FIG. Figure 2 , Figure 3 , Figure 6 and Figure 7As shown, the sleeve mechanism 6 also includes a pop-up structure, and the pop-up structure includes an annular groove opened at the end of the connecting tube 5, the annular groove is recessed inward to form a plurality of cavities, and a push ring 68 is arranged in the annular groove, springs 69 are fixed in the plurality of cavities, and one end of the plurality of springs 69 is commonly connected to one side of the push ring 68.

[0032] When the suction catheter 7 is connected to the connecting tube 5 through the sleeve 61 and the connecting boss 65, the end of the sleeve 61 will contact the push ring 68, so that the push ring 68 is retracted into the annular groove and the spring 69 is squeezed to shrink the spring 69, and then the wedge column 62 is inserted into the wedge groove 63 to complete the connection between the suction catheter 7 and the connecting tube 5. During the disassembly of the suction catheter 7, when the wedge column 62 is pulled out of the wedge groove 63, the spring 69 will push the push ring 68, and then the push ring 68 will push the sleeve 61, so that the sleeve 61 is detached from the connecting boss 65, thereby completing the disassembly of the suction catheter 7, which is conducive to the rapid disassembly and assembly of the suction catheter 7 and convenient for egg retrieval.

[0033] Furthermore, if Figure 4 , Figure 6 and Figure 7 As shown, a plurality of positioning grooves 610 are formed on one side of the push ring 68 , and a positioning block 64 corresponding to the plurality of positioning grooves 610 is installed at the end of the sleeve 61 .

[0034] When the sleeve 61 is sleeved on the outside of the connecting boss 65, the end of the sleeve 61 contacts the push ring 68. At this time, the positioning block 64 is inserted into the positioning groove 610 to quickly position the sleeve 61 and the connecting tube 5, thereby facilitating the installation between the sleeve 61 and the connecting boss 65, and facilitating the quick connection of the suction catheter 7 and the connecting tube 5.

[0035] In addition, in one embodiment, if Figure 1-Figure 3 as well as Figure 5 As shown, a connecting mechanism 3 is provided between the handle 2 and the needle tube 1, and the connecting mechanism 3 includes a connecting tube 31 installed at one end of the handle 2 relative to the tail cover 4, and a connecting column 32 arranged at one end of the needle tube 1, a threaded portion 34 is formed at one end of the connecting column 32, and a threaded groove matching the threaded portion 34 is formed in the connecting tube 31; a first sealing ring 33 is sleeved on the connecting column 32 to seal it and the connecting tube 31.

[0036] When the needle tube 1 is bent by external force and needs to be replaced, the needle tube 1 can be held in one hand and the handle 2 in the other hand, and then the needle tube 1 can be rotated to make the connecting column 32 rotate along the threaded groove in the connecting tube 31 through the screw connection portion 34 until the connecting column 32 is screwed out of the connecting tube 31, completing the separation between the needle tube 1 and the handle 2, and completing the disassembly of the needle tube 1. Then, the new needle tube 1 is screwed into the threaded groove in the connecting tube 31 through the connecting column 32 to screw and fix the needle tube 1 to the handle 2, and complete the installation of the needle tube 1, thereby realizing the detachability of the needle tube 1, facilitating the rapid replacement of the needle tube 1, and ensuring the normal use of the egg retrieval needle.

[0037] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An egg retrieval needle, comprising a needle tube (1), characterized in that: One end of the needle tube (1) is provided with a handle (2), and a connecting tube (5) is provided on the handle (2); an end of the handle (2) opposite to the needle tube (1) is plugged with a tail cover (4), and one end of the connecting tube (5) is connected to a suction catheter (7); A sleeve connection mechanism (6) is also provided between the connecting tube (5) and the suction catheter (7), and the sleeve connection mechanism (6) comprises a connecting boss (65) provided at the end of the connecting tube (5), and a sleeve (61) installed at the end of the suction catheter (7), the sleeve (61) being sleeved on the outside of the connecting boss (65), and a plurality of wedge-shaped grooves (63) are provided on the outer wall of the sleeve (61), a plurality of wedge-shaped grooves (63) are inserted into each of the plurality of wedge-shaped grooves (63), and one end of each of the plurality of wedge-shaped columns (62) forms an extension portion, and a hole groove (66) is also provided on the outer wall of the connecting boss (65) for inserting the plurality of extension portions.

2. The egg retrieval needle according to claim 1, characterized in that: The sleeve connection mechanism (6) also includes a pop-up structure, and the pop-up structure includes an annular groove opened at the end of the connecting tube (5), the annular groove is recessed inward to form a plurality of cavities, and a push ring (68) is arranged in the annular groove, and springs (69) are fixed in the plurality of cavities, and one end of the plurality of springs (69) is commonly connected to one side of the push ring (68).

3. The egg retrieval needle according to claim 2, characterized in that: A plurality of positioning grooves (610) are formed on one side of the push ring (68), and a positioning block (64) corresponding to the plurality of positioning grooves (610) is installed at the end of the sleeve (61).

4. The egg retrieval needle according to claim 1, characterized in that: A connecting mechanism (3) is provided between the handle (2) and the needle tube (1), and the connecting mechanism (3) comprises a connecting tube (31) installed at one end of the handle (2) opposite to the tail cover (4), and a connecting column (32) provided at one end of the needle tube (1), one end of the connecting column (32) forms a threaded portion (34), and a thread groove matching the threaded portion (34) is formed in the connecting tube (31).

5. The egg retrieval needle according to claim 4, characterized in that: The connecting column (32) is sleeved with a first sealing ring (33) for sealing between the connecting column and the connecting tube (31).

6. The egg retrieval needle according to claim 1, characterized in that: The connecting boss (65) is sleeved with a second sealing ring (67) for sealing between the connecting boss (65) and the sleeve (61).

7. The egg retrieval needle according to claim 1, characterized in that: The needle tube (1) forms a needle tube blade surface at one end relative to the handle (2), and the insides of the needle tube (1), the handle (2) and the connecting tube (5) all form mutually communicating channels.

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