Medical instrument biological evaluation implantation device

Abstract

The utility model provides a biological evaluation implantation device for a medical instrument. The biological evaluation implantation device comprises an injection tube and an injection core, one end of the injection tube is open, the other end of the injection tube is sharp, so that the injection tube can pierce into tissues conveniently, and a push-out opening communicated with the injection tube is formed in the side wall of the other end of the injection tube; the injection core is inserted into the injection pipe in a sliding mode through an opening in one end of the injection pipe. The sharp end of the injection tube penetrates into other soft tissues such as target muscular tissues, subcutaneous tissues and the like of an experiment; according to the invention, the injection core is controlled to slide, so that the implant is pushed to slide in the injection tube, and the implant can be pushed out through the push-out opening in the side wall of the injection tube, so that the implant is simply and quickly fed into an expected implantation part in a manner of minimum damage and uniform implantation manner, and the biocompatibility of the implant can be evaluated.

Description

Technical Field

[0001] This utility model relates to the field of medical device biological evaluation technology, specifically to a medical device biological evaluation implantation device. Background Technology

[0002] Biocompatibility refers to the complex biological, physical, and chemical reactions that occur when biological materials come into contact with or are implanted in specific parts of the body. In other words, it determines whether certain materials or drugs are "compatible" with the human body and whether they will cause harm. Products requiring biocompatibility testing are generally medical devices and pharmaceuticals. Biocompatibility testing, also known as medical device biological evaluation, is a crucial step in evaluating the safety and effectiveness of medical device products before they enter clinical trials, and it is also key to their market performance after launch.

[0003] When conducting biological evaluation experiments, it is necessary to implant biological materials into certain parts of the animal's body. Currently, the usual method is to first perform a puncture, and then use a needle or other tubular object to directly push the implant into the animal's muscle tissue, subcutaneous tissue, or other soft tissues. This operation is relatively cumbersome, requiring two steps: puncture and implantation. Utility Model Content

[0004] In view of the above-mentioned problems in the existing technology, the technical problem to be solved by this utility model is that the existing implantation operation is relatively cumbersome, requiring two operation steps: puncture and implantation.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a medical device biological evaluation implantation device, comprising:

[0006] An injection tube, one end of which is open, and the other end of which is pointed to facilitate insertion into tissue; and the side wall of the other end of the injection tube has an outlet communicating with the injection tube; and

[0007] The injection core is slidably inserted into the injection tube through an opening at one end of the injection tube.

[0008] Preferably, it also includes a drive mechanism that can drive the injection core to slide within the injection tube.

[0009] Preferably, the driving mechanism comprises a positioning disc, a positioning sleeve, a shell and a winding roller; the positioning disc is coaxially fixedly installed at one end of the injection tube away from the injection port; the positioning sleeve is coaxially sleeved on the positioning disc, the shell is fixedly connected with the positioning sleeve, and the winding roller is rotatably installed in the shell; the shell is provided with a through hole coaxially arranged with the positioning sleeve, one end of the injection core extends into the shell through the through hole, one end of the injection core is fixedly connected with the winding roller and is wound on the winding roller.

[0010] Preferably, the driving mechanism further comprises a threaded rod, a sliding sleeve and a knob; the threaded rod and the sliding sleeve are coaxially arranged with the winding roller, and the threaded rod and the sliding sleeve are located at two ends of the length direction of the winding roller respectively; one end of the threaded rod is fixedly connected with the shell, the other end of the threaded rod extends into the winding roller, and the threaded rod is coaxially arranged with the winding roller and is threadedly connected with the winding roller; the sliding sleeve is rotatably installed on the shell, one end of the sliding sleeve extends into the winding roller, and the sliding sleeve and the winding roller are slidingly inserted in the length direction of the winding roller; one end of the sliding sleeve extends out of the shell, and the knob is coaxially fixed on the end.

[0011] Preferably, the driving mechanism further comprises a torsional spring, which applies a torsional force to the sliding sleeve to drive the injection core to be wound on the winding roller.

[0012] Preferably, one end of the injection core away from the winding roller is provided with an inclined surface, and the injection port and the bottom wall in the injection tube are smoothly connected.

[0013] Preferably, the positioning disc and the positioning sleeve are both provided with mark points.

[0014] Compared with the prior art, the utility model has at least the following advantages:

[0015] 1. In the utility model, the injection core is pulled out, the implant is placed into the injection tube, and then the injection core is inserted into the injection tube again; the sharp end of the injection tube is stabbed into the target muscle tissue, subcutaneous tissue or other soft tissue of the experimental animal; the injection core is controlled to slide, so as to push the implant to slide in the injection tube, so that the implant can be pushed out of the injection port on the side wall of the injection tube, and the implant can be sent to the expected implantation site in a simple and fast way with minimum damage and uniform implantation, so that the biocompatibility of the implant can be evaluated again.

[0016] 2. The utility model discloses a push injection tube is placed in the implant, and one end of push injection core is inserted into push injection tube, and positioning cover is set on the positioning disc, so the installation of push injection core and drive mechanism can be completed, and then the rotation of winding roller is controlled, so that push injection core on winding roller passes through the through -hole and slides into push injection tube, so as to realize the implantation of implant; when the implantation is completed, the reverse rotation of winding roller is controlled again, so that push injection core is wound on winding roller again, so that push injection core can slide out of push injection tube, and the operation space can be greatly saved by winding push injection core, and it is more beneficial to the push of slender push injection core.

[0017] 3. The utility model discloses the rotation of sliding sleeve is controlled through knob, and sliding sleeve drives winding roller to rotate, so that push injection core on winding roller can go in and out push injection tube through the through -hole, and when winding roller rotates, under the action of threaded rod, winding roller moves in its length direction, so that push injection core can be more conveniently wound on winding roller, and when conveying push injection core towards push injection tube, the distortion of push injection core can be effectively reduced, and push injection core can be more conveniently conveyed and removed. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the specific embodiment of the utility model, the drawings needed to be used in the specific embodiment will be simply introduced below. In all drawings, various elements or parts are not necessarily drawn according to actual proportion.

[0019] Figure 1 A kind of medical instrument biological evaluation implant device's perspective structural schematic diagram is provided for the embodiment in the utility model.

[0020] Figure 2 A kind of medical instrument biological evaluation implant device's sectional view structural schematic diagram is provided for the embodiment in the utility model.

[0021] Figure 3 The partial sectional view structural schematic diagram of push injection tube is provided for the embodiment in the utility model.

[0022] Figure 4 The partial perspective structural schematic diagram of drive mechanism is provided for the embodiment in the utility model.

[0023] Reference signs:

[0024] 1-push injection tube, 11-push outlet,

[0025] 2-push injection core, 21-inclined surface,

[0026] 3-drive mechanism, 31-positioning disc, 32-positioning cover, 33-housing, 34-winding roller, 35-threaded rod, 36-sliding sleeve, 37-knob. DETAILED DESCRIPTION

[0027] The embodiments of the technical scheme of the utility model will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the utility model, therefore only as an example, and cannot limit the protection scope of the utility model.

[0028] In the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as the limitation of the utility model.

[0029] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication inside two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] Referring to Figures 1-4 The utility model provides an embodiment: a kind of medical instrument biology evaluation implant device, comprising: push injection tube 1 and push injection core 2;One end of push injection tube 1 is open, and the other end of push injection tube 1 is arranged in sharpness, to facilitate push injection tube 1 to be pierced into tissue, and the side wall of the other end of push injection tube 1 is provided with push outlet 11 communicated with push injection tube 1;Push injection core 2 is slidably inserted in push injection tube 1 by the opening of one end of push injection tube 1.

[0031] In specific implementation, the inner diameter of the injection tube 1 is 2.2 mm, and the length is 10 cm; the implant is a cylinder with a diameter of 2 mm and a length of 6 mm, and the outer diameter of the injection core 2 is 2.0 mm and the length is 10 cm; the injection core 2 is pulled out, and then the implant is placed into the injection tube 1, and then the injection core 2 is inserted into the injection tube 1 again; then the sharp end of the injection tube 1 is pierced into the target muscle tissue, subcutaneous tissue or other soft tissue of the experimental animal; then the sliding of the injection core 2 is controlled to push the implant to slide in the injection tube 1, so that the implant can be pushed out through the push-out port 11 on the side wall of the injection tube 1, so that the implant can be sent to the intended implantation site in a way of minimum damage and uniform implantation, thereby the biocompatibility of the implant can be evaluated.

[0032] Referring to Figures 1-4 In other embodiments, a driving mechanism 3 is further included, which can drive the injection core 2 to slide in the injection tube 1. The injection core 2 can be pushed more conveniently by driving the injection core 2 to slide in the injection tube 1 by the driving mechanism 3. Further, the driving mechanism 3 includes a positioning disc 31, a positioning sleeve 32, a housing 33 and a winding roller 34; the positioning disc 31 is coaxially fixedly installed at the end of the injection tube 1 away from the push-out port 11; the positioning sleeve 32 is coaxially sleeved on the positioning disc 31, the housing 33 is fixedly connected with the positioning sleeve 32, and the winding roller 34 is rotatably installed in the housing 33; the housing 33 is provided with a through hole coaxially arranged with the positioning sleeve 32, and one end of the injection core 2 extends into the housing 33 through the through hole; one end of the injection core 2 is fixedly connected with the winding roller 34 and wound on the winding roller 34.

[0033] In specific implementation, after the implant is placed into the injection tube 1, one end of the injection core 2 is inserted into the injection tube 1, and the positioning sleeve 32 is sleeved on the positioning disc 31, so that the installation of the injection core 2 and the driving mechanism 3 is completed, and then the winding roller 34 is controlled to rotate, so that the injection core 2 wound on the winding roller 34 slides into the injection tube 1 through the through hole, thereby the implantation of the implant is realized; after the implantation of the implant is completed, the winding roller 34 is controlled to rotate reversely, so that the injection core 2 is wound on the winding roller 34 again, so that the injection core 2 can slide out of the injection tube 1, and the operation space can be greatly saved by winding the injection core 2, which is more conducive to the pushing of the slender injection core 2. Specifically, the injection core 2 can be made of a material capable of elastic deformation, such as plastic.

[0034] Referring to Figures 1-4In other embodiments, further comprising a threaded rod 35, a sliding sleeve 36 and a knob 37; the threaded rod 35 and the sliding sleeve 36 are coaxially arranged with the winding roller 34, and the threaded rod 35 and the sliding sleeve 36 are respectively located at two ends of the winding roller 34 in the length direction; one end of the threaded rod 35 is fixedly connected with the shell 33, and the other end of the threaded rod 35 extends into the winding roller 34, and the threaded rod 35 is coaxially arranged with the winding roller 34 and is threadedly connected with the winding roller 34; the winding roller 34 is rotatably installed in the shell 33 through the sliding sleeve 36, the sliding sleeve 36 is rotatably installed on the shell 33, one end of the sliding sleeve 36 extends into the winding roller 34, and the sliding sleeve 36 and the winding roller 34 are slidingly inserted in the length direction of the winding roller 34; one end of the sliding sleeve 36 extends out of the shell 33, and the knob 37 is coaxially fixed thereon.

[0035] In specific implementation, the sliding sleeve 36 is rotated by the knob 37, the sliding sleeve 36 drives the winding roller 34 to rotate, so that the injection core 2 on the winding roller 34 can enter or exit the injection tube 1 through the through hole; and when the winding roller 34 rotates, the winding roller 34 is driven to move in the length direction under the action of the threaded rod 35, so that the injection core 2 can be more conveniently wound on the winding roller 34, and when the injection core 2 is transported into the injection tube 1, the twisting of the injection core 2 can be effectively reduced, and the injection core 2 can be more conveniently transported and removed.

[0036] Referring to Figures 1-4 In other embodiments, a torsional spring is further included, the torsional spring applies a torsional force to the sliding sleeve 36 to drive the injection core 2 to be wound on the winding roller 34. In specific implementation, the sliding sleeve 36 is rotated forward, so that the injection core 2 can be pushed into the injection tube 1, and when the injection core 2 is rotated forward, the torsional spring is energized; after the implant is implanted, the sliding sleeve 36 is loosened, and the sliding sleeve 36 is reversed under the action of the elastic force of the torsional spring, so that the injection core 2 can be automatically slid out of the injection tube 1; thereby the operation steps can be reduced, and automatic resetting after each injection can be facilitated.

[0037] Referring to Figures 1-4In still another embodiment, the end of the push-in core 2 away from the winding roller 34 is provided with a slope 21, and the push-out port 11 is smoothly connected with the bottom wall in the push-in tube 1. In specific implementation, after the implant moves to the push-out port 11, the implant contacts the inner side wall of the smooth transition of the push-in tube 1, so that the implant changes the moving direction and moves towards the push-out port 11, and the slope 21 also bends towards the push-out port 11 when contacting the inner side wall of the smooth transition of the push-in tube 1, so that the implant can be more conveniently pushed out from the push-out port 11. Further, the positioning disc 31 and the positioning sleeve 32 are both provided with mark points. Through the setting of the mark points, the direction of the slope 21 on the push-in core 2 can be more clearly determined, and the direction of the slope 21 can be adjusted by rotating the positioning sleeve 32, so that the force direction of the slope 21 on the implant can be conveniently determined, and it is ensured that the implant can be accurately pushed out from the push-out port 11.

[0038] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered in the scope of the claims and the specification of the present application.

Claims

1. A medical device biological evaluation implantation device, characterized in that, include: The injection tube has an open end and a pointed end to facilitate its insertion into the tissue. The side wall of the other end of the injection tube has an outlet that communicates with the injection tube. and The injection core is slidably inserted into the injection tube through an opening at one end of the injection tube.

2. The medical device biological evaluation implantation device according to claim 1, characterized in that, It also includes a drive mechanism that can drive the injection core to slide inside the injection tube.

3. The medical device biological evaluation implantation device according to claim 2, characterized in that, The driving mechanism includes: a positioning disk, a positioning sleeve, a housing, and a winding roller; the positioning disk is coaxially fixedly installed at the end of the injection tube away from the ejection port; the positioning sleeve is coaxially sleeved on the positioning disk, the housing is fixedly connected to the positioning sleeve, and the winding roller is rotatably installed inside the housing; the housing has a through hole coaxially arranged with the positioning sleeve, and one end of the injection core extends into the housing through the through hole; one end of the injection core is fixedly connected to the winding roller and wound on the winding roller.

4. The medical device biological evaluation implantation device according to claim 3, characterized in that, Also includes: The device comprises a threaded rod, a sliding sleeve, and a knob; the threaded rod and the sliding sleeve are coaxially arranged with the winding roller, and the threaded rod and the sliding sleeve are respectively located at both ends of the winding roller along its length; one end of the threaded rod is fixedly connected to the housing, and the other end of the threaded rod extends into the winding roller, and the threaded rod is coaxially arranged with the winding roller and threadedly connected to the winding roller; the sliding sleeve is rotatably mounted on the housing, one end of the sliding sleeve extends into the winding roller, and the sliding sleeve is slidably inserted into the winding roller along its length; one end of the sliding sleeve extends out of the housing, and a knob is coaxially fixed thereon.

5. The medical device biological evaluation implantation device according to claim 4, characterized in that, It also includes a torsion spring that applies a torque to the sliding sleeve to drive the injection core to wind around the winding roller.

6. The medical device biological evaluation implantation device according to claim 3, characterized in that, The end of the injection core away from the winding roller is provided with an inclined surface, and the ejection port smoothly transitions to the bottom wall inside the injection tube.

7. The medical device biological evaluation implantation device according to claim 6, characterized in that, Both the positioning disk and the positioning sleeve are equipped with marking points.

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