Puncture needle tube for animal egg taking equipment

Abstract

The utility model provides a puncture needle tube for animal egg taking equipment, and belongs to the technical field of breeding instruments for veterinarians. The puncture needle comprises a rod body and a needle head, the needle head comprises a connecting cap and a needle body, one of the connecting cap and the rod body is provided with an internal thread, the other one of the connecting cap and the rod body is provided with an external thread matched with the internal thread, and the connecting cap and the rod body are connected in a matched mode through the internal thread and the external thread. The needle head and the rod body are connected through the threads, so that the reliability of connection between the needle head and the rod body is effectively improved, the needle head is prevented from loosening in the using process, and the accuracy and the safety of egg taking operation are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of veterinary breeding equipment, in particular to a puncture needle tube used for animal egg collection equipment. Background Art

[0002] Special equipment is required for egg extraction from living animals. For example, the Chinese utility model patent with authorization announcement number CN207590697U discloses an auxiliary device for an ultrasonic probe, which includes a handheld frame and a puncture needle. The front end of the frame is provided with an ultrasonic probe for detecting the position of the animal's ovaries. The frame is provided with a puncture channel that penetrates the frame and is used to guide the puncture needle along its length. When in use, the puncture needle is inserted into the puncture channel from the rear end, and under the guidance of the puncture channel, the needle head of the puncture needle is passed out from the front end of the transmission path to puncture the ovary to absorb the egg cell.

[0003] A general puncture needle includes a needle and a tubular rod. The needle includes a connecting cap and a needle body. The connecting cap is installed at the front end of the rod by interference fit. A hose is also provided in the rod, and the hose is sleeved on the tail of the steel needle of the needle by interference fit. The rod can provide a gripping position for the operator to perform the egg retrieval operation, and can also play a role in protecting the hose. However, the connection between the needle and the rod is not stable enough, and it is easy to loosen during use, resulting in operational errors, leading to egg retrieval failure, and even endangering the life safety of the animal. Utility Model Content

[0004] One of the purposes of the utility model is to provide a puncture needle tube for animal egg retrieval equipment to solve the technical problem in the prior art that the connection between the needle and the rod is not reliable enough, which easily leads to the loosening of the needle, resulting in egg retrieval failure and even endangering the life safety of the animal.

[0005] To achieve the above purpose, the technical solution of the puncture needle tube for animal egg retrieval equipment provided by the utility model is:

[0006] A puncture needle comprises a rod body and a needle head, wherein the needle head comprises a connecting cap and a needle body, wherein one of the connecting cap and the rod body is provided with an internal thread, and the other is provided with an external thread matching the internal thread, and the connecting cap and the rod body are connected by the matching internal thread and the external thread.

[0007] As a further improvement, the connecting cap is provided with a step hole along its axial direction, the small diameter section of the step hole is used to install the needle body, and the tail end of the needle body is located in the large diameter section of the step hole. The puncture needle tube used for the animal egg retrieval equipment also includes a hose for being connected to the tail end of the needle body, and the hose is provided with an annular plug for being inserted into the annular space between the large diameter section of the step hole and the needle body to press the hose against the needle body.

[0008] As a further improvement, the hose is provided with an adapter for connecting to the connecting cap, and one axial end of the adapter is used to be inserted into the annular space between the large diameter section of the step hole and the needle body and to press the annular plug to make the annular plug expand radially to press the hose against the top pressing end on the needle body.

[0009] As a further improvement, the adapter is detachably connected to the connecting cap.

[0010] As a further improvement, the pressing end of the adapter is provided with a threaded fitting section, the large diameter section of the step hole is an internal threaded hole, and the internal threaded hole is threadedly fitted to the threaded fitting section.

[0011] As a further improvement, a screwing section for the operator to hold is provided at one end of the adapter away from the pressing end, and the outer diameter of the screwing section is larger than the outer diameter of the threaded fitting section and smaller than the inner diameter of the rod body.

[0012] As a further improvement, the end of the rod body is provided with an internal thread, the connecting cap has an external thread section for matching with the internal thread on the rod body, and the outer diameter of the connecting cap at any position is not greater than the outer diameter of the rod body.

[0013] As a further improvement, the connecting cap has a reinforcement section, and the outer diameter of the reinforcement section is larger than the outer diameter of the external thread section.

[0014] As a further improvement, the axial end wall of the reinforcement section close to the external thread section is a stop wall for forming a stop fit with the rod body.

[0015] As a further improvement, the outer diameter of the reinforcement section is equal to the outer diameter of the rod body.

[0016] The beneficial effect is that the puncture needle tube for animal egg retrieval equipment provided by the utility model is an improvement over the prior art. The needle head and the rod body of the puncture needle tube for animal egg retrieval equipment are connected by threads. Compared with the interference fit method in the prior art, when the rod body is pulled along the axial direction of the rod body, the needle head will not loosen and disengage from the rod body, thereby effectively improving the reliability of the connection between the needle head and the rod body, and ensuring the accuracy and safety of the egg retrieval operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of an egg retrieval device in one embodiment of a puncture needle tube used for an animal egg retrieval device of the utility model;

[0018] Figure 2 This is a structural schematic diagram of an auxiliary handle in one embodiment of the puncture needle tube used in the animal egg retrieval device of the utility model;

[0019] Figure 3 A partial cross-sectional view of a puncture needle in one embodiment of a puncture needle tube for an animal egg retrieval device of the utility model;

[0020] Figure 4 A cross-sectional view of a connecting cap in one embodiment of a puncture needle tube for an animal egg retrieval device of the utility model;

[0021] Figure 5 A three-dimensional view of a connecting cap in one embodiment of a puncture needle tube for an animal egg retrieval device of the utility model;

[0022] Figure 6 A front view of an adapter in one embodiment of a puncture needle tube for an animal egg retrieval device of the utility model;

[0023] Figure 7 A three-dimensional view of an adapter in one embodiment of a puncture needle tube for an animal egg retrieval device of the utility model.

[0024] Description of reference numerals:

[0025] 1. Auxiliary handle; 2. Puncture channel; 3. Ultrasonic probe; 4. Rod body; 5. Needle; 51. Needle body; 52. Connecting cap; 521. External thread section; 522. Reinforcement section; 523. Stop wall; 53. Mounting hole; 54. Internal thread hole; 6. Hose; 7. Adapter; 71. Screw section; 72. Threaded matching section; 73. Conducting hole; 8. Ring plug. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the embodiments.

[0027] In order to solve the problems existing in the prior art, the basic concept of the present invention is to connect the needle and the rod body by means of threads. Compared with the interference fit method in the prior art, when the rod body is pulled along the axial direction of the rod body, the needle will not loosen and disengage from the rod body, thereby effectively improving the reliability of the connection between the needle and the rod body and ensuring the accuracy and safety of the egg retrieval operation.

[0028] Specific embodiments of the puncture needle tube for animal egg collection equipment provided by the utility model:

[0029] The puncture needle in this embodiment is a part of the egg retrieval device, see the attached Figure 1 and attached Figure 2 The egg retrieval device also includes an auxiliary handle 1, and the auxiliary handle 1 is provided with a puncture channel 2 along its length direction. The front end of the auxiliary handle 1 is located below the puncture channel 2 and is provided with an ultrasonic probe 3 for detecting the position of the animal's ovaries. In the utility model, the end of the auxiliary handle 1 used to extend into the animal body is the front end, and the other end is the rear end. The specific structure of the auxiliary handle 1 can be the same as the hand grip structure in the Chinese utility model patent with authorization announcement number CN211271340U, and can also be the same as the structure of the auxiliary device of the ultrasonic probe 3 in the Chinese utility model patent with authorization announcement number CN207590697U.

[0030] See attached Figure 3 The puncture needle comprises a rod body 4 and a needle head 5, wherein the needle head 5 comprises a connecting cap 52 and a needle body 51 for piercing animal tissue, see the attached Figure 4 and attached Figure 5 A stepped hole is formed through the center of the connection cap 52. The stepped hole has a large diameter section and a small diameter section. The small diameter section is located in the front and is a mounting hole 53 for mounting the needle body 51. The large diameter section is an internal threaded hole 54. The inner diameter of the internal threaded hole 54 is larger than the inner diameter of the mounting hole 53. The rear end of the needle body 51 is located in the internal threaded hole 54. The rear end of the connection cap 52 is also formed with an external thread. The area formed with the external thread constitutes an external thread section 521. The connection cap 52 has a reinforcement section 522. The outer diameter of the reinforcement section 522 is larger than the outer diameter of the external thread section 521 to ensure that the connection cap 52 has sufficient strength.

[0031] The rod body 4 is a tube of equal diameter, and an internal thread is formed at the end of the rod body 4, and the external thread section 521 cooperates with the internal thread on the rod body 4. After the connection cap 52 is connected to the rod body 4, the axial end wall of the reinforcement section 522 close to the external thread section 521 is stopped and matched with the axial end wall of the rod body 4, which plays a role in limiting the connection between the connection cap 52 and the rod body 4. The outer diameter of the reinforcement section 522 is equal to the outer diameter of the rod body 4, so as to improve the integrity of the connection cap 52 and the rod body 4 after being connected.

[0032] The connecting cap 52 is provided with an adapter 7 for inserting into the inner cavity of the rod body 4, see the attached Figure 6 and attached Figure 7 The adapter 7 is provided with a conducting hole 73 along its axial direction, and a hose 6 is passed through the conducting hole 73, and the inner diameter of the conducting hole 73 is equal to the outer diameter of the hose 6. The hose 6 is also sleeved with an annular plug 8, which is located in front of the adapter 7 and is specifically a rubber plug.

[0033] The end of the adapter 7 axially close to the annular plug 8 is a threaded fitting section 72, and the threaded fitting section 72 is formed with an external thread that is threadedly fitted with the internal threaded hole 54 of the connecting cap 52. When in use, the hose is sleeved on the tail end of the needle body 51, and then the annular plug 8 is installed into the internal threaded hole 54, and finally the threaded fitting section 72 is threadedly connected with the internal threaded hole 54. After the adapter 7 and the connecting cap 52 are assembled together and tightened, the axial end of the threaded fitting section 72 will axially squeeze the annular plug 8 so that the annular plug 8 expands radially, and then squeezes the hose 6, so that sufficient friction is generated between the hose 6 and the needle body 51 to prevent the hose 6 from falling off. The axial end of the threaded fitting section 72 is the top pressing end. The end of the adapter 7 away from the top pressing end is provided with a screwing section 71 for the operator to hold. The outer diameter of the screwing section 71 is larger than the outer diameter of the threaded fitting section 72 and smaller than the inner diameter of the rod body 4, so as to facilitate the operator to rotate the adapter. In other embodiments, the outer diameter of the screwing section can also be equal to the outer diameter of the threaded fitting section.

[0034] The connection cap 52 and the rod body 4 are connected by threads, which is more reliable than the interference fit connection in the prior art, and can effectively prevent the needle 5 from loosening during use, ensuring the accuracy and safety of the egg retrieval operation. In addition, the connection strength between the hose 6 and the needle body 51 is strengthened by the annular plug 8, so that the connection between the hose 6 and the needle body 51 is more secure; and the adapter 7 and the connection cap 52 are connected by threads, and the operator can connect the adapter 7 and the connection cap 52 by twisting it during use, which is convenient to operate.

[0035] In other embodiments, the outer diameter of the reinforcing section may not be equal to the outer diameter of the rod body, but the outer diameter of the reinforcing section must be smaller than the outer diameter of the rod body to prevent the puncture needle from shaking during the forward and backward movement in the puncture channel. In other embodiments, the reinforcing section may not be provided, so that the outer peripheral wall of the connecting cap is a structure of equal diameter.

[0036] In other embodiments, the connecting cap may also be connected to the rod body without an external thread segment. In this embodiment, a connecting hole coaxial with the internal thread hole is provided on the connecting cap, and the inner diameter of the connecting hole is larger than the inner diameter of the internal thread hole. An internal thread is formed on the inner wall of the connecting hole, and an external thread matching the internal thread is formed at the end of the rod body.

[0037] In the above embodiments, the adapter is detachably connected to the connection cap by means of threaded engagement. In other embodiments, the inner wall of the large diameter section of the step hole is not provided with internal threads, but is formed with an annular groove. A convex ring is provided on the adapter. When the top pressure end of the adapter is inserted into the large diameter section of the step hole, the inner wall of the large diameter section of the step hole will undergo elastic deformation, so that the convex ring enters the large diameter section of the step hole. After the top pressure end is inserted into place, the convex ring will be stuck in the groove to maintain the stability between the adapter and the connection cap. In other embodiments, the adapter can also be non-detachably connected to the connection cap, for example, the adapter can also be fixedly connected to the connection cap by bonding.

[0038] In other embodiments, an adapter may not be provided, and the hose is only compressed by an annular plug. In this embodiment, the inner diameter of the annular plug is slightly smaller than the outer diameter of the hose, and the outer diameter of the annular plug may be slightly larger than the inner diameter of the large diameter section of the step hole, so that the annular plug can be tightly inserted into the annular space between the large diameter section of the step hole and the needle body, thereby generating sufficient compression force on the hose.

[0039] In other embodiments, the annular plug may not be provided. In this embodiment, the hose is only sleeved on the rear end of the needle body and is pressed against the needle body by its own elasticity.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A puncture needle tube for animal egg retrieval equipment, comprising a rod body and a needle head, wherein the needle head comprises a connecting cap and a needle body, wherein: One of the connecting cap and the rod body is provided with an internal thread, and the other is provided with an external thread matching the internal thread. The connecting cap and the rod body are connected by the matching of the internal thread and the external thread.

2. The puncture needle tube for animal egg retrieval equipment according to claim 1, characterized in that: The connecting cap is provided with a stepped hole along its axial direction, the small diameter section of the stepped hole is used to install the needle body, and the tail end of the needle body is located in the large diameter section of the stepped hole. The puncture needle tube used for the animal egg retrieval equipment also includes a hose for being sleeved onto the tail end of the needle body, and the hose is sleeved with an annular plug for being inserted into the annular space between the large diameter section of the stepped hole and the needle body to press the hose against the needle body.

3. The puncture needle tube for animal egg retrieval equipment according to claim 2, characterized in that: The hose is sleeved with an adapter for connecting to the connecting cap, and one axial end of the adapter is used to be inserted into the annular space between the large diameter section of the step hole and the needle body and press the annular plug to make the annular plug expand radially to press the hose tightly onto the needle body.

4. The puncture needle tube for animal egg retrieval equipment according to claim 3, characterized in that: The adapter and the connecting cap are detachably connected.

5. The puncture needle tube for animal egg retrieval equipment according to claim 4, characterized in that: The top pressing end of the adapter is provided with a thread matching section, the large diameter section of the step hole is an internal thread hole, and the internal thread hole is thread matchingly connected with the thread matching section.

6. The puncture needle tube for animal egg retrieval equipment according to claim 5, characterized in that: The end of the adapter away from the pressing end is provided with a screwing section for the operator to hold, and the outer diameter of the screwing section is larger than the outer diameter of the thread matching section and smaller than the inner diameter of the rod body.

7. The puncture needle tube for animal egg retrieval equipment according to any one of claims 1 to 6, characterized in that: An internal thread is arranged at the end of the rod body, and the connecting cap has an external thread section for matching with the internal thread on the rod body. The outer diameter of the connecting cap at any position is not greater than the outer diameter of the rod body.

8. The puncture needle tube for animal egg retrieval equipment according to claim 7, characterized in that: The connecting cap has a reinforcement section, and the outer diameter of the reinforcement section is larger than the outer diameter of the external thread section.

9. The puncture needle tube for animal egg retrieval equipment according to claim 8, characterized in that: The axial end wall of the reinforcement section close to the external thread section is a stop wall used to form a stop fit with the rod body.

10. The puncture needle tube for animal egg retrieval equipment according to claim 8, characterized in that: The outer diameter of the reinforcement section is equal to the outer diameter of the rod body.

Images