TWM643388U - Medical implantation device - Google Patents

Abstract

The invention discloses a medical implant device, which includes a porous implant and an implantation aid. The implantation aid includes a hollow cannula for accommodating the multiporous implant, and a push rod with one end inserted into the hollow cannula. One end of the hollow cannula is provided with a first assembly part, and one end of the push rod is provided with a second assembly part. The axis moves linearly to push the porous implant toward the other end of the hollow cannula.

Description

medical implant

The invention relates to a medical implant device, in particular to a medical implant device with simple structure and easy operation.

As we grow older, body tissues or organs are prone to damage or damage to varying degrees due to factors such as aging, injury, or disease. When the degree of damage exceeds the extent that the body can repair itself, if it is ignored, it may aggravate the degree of damage to the body, and even pose a threat to life. This is a considerable burden and pressure on the patient himself, his family, or even the entire society. Therefore, it is the goal of the current research institute to find suitable repair methods or replace tissues and organs for patients.

Modern biotechnology has gradually developed a new research field of tissue engineering, which uses the combination of biomedical materials and tissue cell culture technology to try to provide replacement, repair or reconstruction methods for damaged tissues or organs, helping patients recover or prolong their lives.

Generally, during surgery, medical staff will use various surgical instruments to place the implants used to repair or replace tissues and organs in the correct position in the patient's body. Since the instruments frequently contact the patient's blood, tissues or organs, it is necessary to thoroughly clean and sterilize the instruments. However, instruments with too complicated structures are not only time-consuming and labor-intensive to clean and sterilize, but also prone to incomplete cleaning and sterilization, which will increase the risk of postoperative infection in patients.

In view of the above-mentioned technical problems in the conventional technology, the author of this case believes that it is necessary to conceive an implant device with a simple structure and easy operation, so as to ensure the safety and accuracy of the implant operation and reduce the probability of postoperative infection.

In order to achieve the above object, the invention provides a medical implant device, which includes a porous implant and an implantation aid. The implantation aid includes a hollow cannula for accommodating the multiporous implant, and a push rod with one end inserted into the hollow cannula. One end of the hollow cannula is provided with a first assembly part, and one end of the push rod is provided with a second assembly part. The axis of the hollow cannula moves linearly to push the porous implant toward the other end of the hollow cannula.

Further, the first assembling part is screwed with the second assembling part to progressively push the porous implant in the hollow cannula.

Further, the push rod includes a rod inserted into the hollow cannula, and a handle arranged at one end of the rod.

Further, the rod includes a rod body and a pushing block arranged at the end of the rod body.

Further, the outer diameter of the pushing block is larger than the outer diameter of the rod body and equal to or smaller than the inner diameter of the hollow cannula.

Further, the top side of the pushing block is substantially flush with or slightly protrudes from the other end of the hollow cannula to completely push out the porous implant.

Further, the handle includes a handle body with a groove for the rod to be disposed therein, and a boss disposed on the outer edge of the groove.

Further, a stopper against which the boss abuts is provided on the outer periphery of the hollow cannula so as to limit the push rod relative to the hollow cannula.

Further, the other end of the hollow cannula is provided with at least a slit to form a plurality of elastic clamping jaws.

Further, the first assembling part is an external thread provided on the outer peripheral side of one end of the hollow cannula, and the second assembling part is an internal thread provided on the inner peripheral side of the groove and screwed with the external thread.

Further, the outer diameter of the porous implant is equal to or smaller than the inner diameter of the hollow cannula.

Further, the porous implant is made of bioabsorbable polymer material.

The medical implant device of the present invention uses the push rod to move linearly and gradually in the hollow cannula, thereby slowly pushing the porous implant placed in the hollow cannula to achieve the effect of inserting and fixing the porous implant in the patient's body.

The detailed description and technical content of this creation are now described as follows with respect to the accompanying drawings. Furthermore, for the convenience of explanation, the proportions of the diagrams in this creation may not be drawn according to the actual scale. These diagrams and their proportions are not intended to limit the scope of this creation, so they are described here first.

Please refer to "Figure 1" to "Figure 4" for the schematic diagram of the appearance of the medical implant device, the schematic diagram of the structure exploded from different perspectives, and the schematic diagram of the cross-section, as shown in the figure.

The invention discloses a medical implant device 100, the medical implant device 100 includes a porous implant 10, and an implant aid 20, and the implant aid 20 is used to gradually place the porous implant 10 in the patient's body.

The porous implant 10 is made of a bioabsorbable polymer material selected from the following group: polylactide acid (polyglycolic acid; PGA), polylactic acid (polylactic acid; PLA), poly(glycolic co-Lactic) acid (poly(glycolic co-Lactic) acid; PLGA), polyanhydrides, polycapralactone (polycapralactone) , polydioxanone (polydioxanone) and polyorthoester (polyorthoester). In a preferred embodiment, the material of the porous implant 10 is polylactic-glycolic acid (PLGA).

The pore diameter of the porous implant 10 is between 50 and 500 mm. The porous implant 10 includes a main body, at least one hollow cavity inside the main body for placing tissue pieces, and an upper cover covering the opening of the hollow cavity, wherein the main body and the upper cover are made of the same material. The tissue block is, for example but not limited to, cartilage tissue or hard bone tissue of any animal tissue. The particle size of the tissue block is between 500 and 1000. The tissue block is partially dissolved by enzymes and then placed into the hollow cavity, so that the tissue grows from the inside to the hole of the peripheral porous implant 10 in a three-dimensional manner, and new tissue is directly proliferated in the form of tissue, so that the desired tissue can be cultured in vitro in the shortest time with the least amount of tissue. In order to prevent the tissue mass in the hollow cavity of the porous implant 10 from overflowing, the particle size of the tissue mass is larger than the pore size of the peripheral substrate of the main body. The appearance and shape of the porous implant 10 can be changed arbitrarily according to actual needs. The porous implant 10 is, for example but not limited to, cylindrical, cubic or other arbitrary shapes.

The implantation aid 20 includes a hollow cannula 21 and a push rod 22 inserted at one end of the hollow cannula 21. The hollow cannula 21 is used to accommodate the porous implant 10, wherein the outer diameter OD1 of the porous implant 10 is equal to or smaller than the inner diameter ID1 of the hollow cannula 21, so as to facilitate the insertion of the porous implant 10 into the hollow cannula 21. The implantation aid 20 is made of medical stainless steel, or a single metal, alloy, plastic or other materials that meet medical grades, and the hollow cannula 21 and the push rod 22 are made of the same or different materials. The inner shape of the hollow cannula 21 is circular, and is used to put the multiporous implant 10 in a cylindrical shape (as shown in FIG. 2 ), a cube shape or other arbitrary shapes.

One end of the hollow cannula 21 is provided with a first assembly portion S1, and one end of the push rod 22 is provided with a second assembly portion S2. The push rod 22 is combined with the first assembly portion S1 via the second assembly portion S2 to be installed on the hollow cannula 21, and the push rod 22 is linearly moved along the axis C of the hollow cannula 21 to push the porous implant 10 toward the other end of the hollow cannula 21. "One end of the cannula 21" refers to the position where the porous implant 10 is placed in the hollow cannula 21. The first assembling part S1 of the hollow cannula 21 is screwed with the second assembling part S2 of the push rod 22 to gradually push the porous implant 10 in the hollow cannula 21, so as to place the porous implant 10 in the patient's body. The specific implementations of the first assembly part S1 and the second assembly part S2 will be described in detail in the following paragraphs, and will be described here first.

The push rod 22 includes a rod 221 inserted into the hollow cannula 21 , and a handle 222 disposed at one end of the rod 221 , the handle 222 is for the operator to hold to apply force to the rod 221 . The rod 221 includes a rod body 2211 and a pushing block 2212 disposed at the end of the rod body 2211. The rod body 2211 is, for example but not limited to, cylindrical, cubic or any other shape. The outer diameter OD3 of the pushing block 2212 is larger than the outer diameter OD2 of the rod body 2211 and equal to or smaller than the inner diameter ID1 of the hollow cannula 21, so that the bar body 2211 drives the pushing block 2212 to move in the hollow cannula 21.

As shown in FIG. 3 , the external shape and size (cylindrical shape) of the porous implant 10 and the pushing block 2212 roughly match the internal shape and size (circular shape) of the hollow cannula 21. The top end of the cylindrical pushing block 2212 is used to contact the porous implant 10 which is also cylindrical, so that the push rod 22 applies force to the porous implant 10 evenly, preventing the porous implant 10 from being skewed or damaged due to uneven force application.

The handle 222 includes a handle body 2221 with a groove G, and a boss 2222 disposed on the outer edge of the groove G, the groove G for the rod 221 to be disposed therein. The handle body 2221 is, for example but not limited to, circular (as shown in FIG. 1 ), oval, rectangular, or any other shape.

In one embodiment, as shown in FIG. 2 and FIG. 3 , the outer peripheral side of one end of the hollow cannula 21 is provided with the first assembly part S1 which is an external thread, and the second assembly part S2 is an internal thread provided on the inner peripheral side of the groove G and screwed with the external thread. In another embodiment, the difference from the previous embodiment is that the relative setting relationship between the aforementioned external thread and internal thread can be exchanged (not shown in the figure). For example, one end of the hollow cannula 21 (referring to the end opposite to the elastic jaw 213) is provided with an internal thread (i.e. the first assembly part S1) on the inner peripheral side, and the outer peripheral side of the handle 222 is provided with an external thread (i.e. the second assembly part S2). , to achieve the effect of the push rod 22 gradually pushing the porous implant 10 in the hollow cannula 21 . The specific aspects of the first assembling part S1 and the second assembling part S2 in this invention are not limited to the above-mentioned ones, and will be described here first.

The outer periphery of the hollow cannula 21 is provided with a stopper 211 , for example, but not limited to, the stopper 211 is partially or completely disposed around the outer periphery of the hollow cannula 21 . In one embodiment, as shown in FIG. 1 , the stopper 211 is against the boss 2222 to limit the push rod 22 relative to the hollow cannula 21 and prevent the push rod 22 from protruding too much and hurting the patient. The porous implant 10 in the tube 21 achieves the purpose of inserting the porous implant 10 in the patient's body. Here, "the other end of the hollow cannula 21" refers to the position where the elastic clamping claw 213 is disposed. In another embodiment, the difference from the previous embodiment is that the outer edge of the groove G of the handle body 2221 is a complete plane with no step difference (not shown in the figure), that is, there is no boss 2222 mentioned above, and the effect of limiting the push rod 22 can also be achieved by using the complete plane to abut against the stopper 211.

Continuing, please refer to "FIG. 5" together, which is a partially enlarged cross-sectional schematic diagram of different embodiments continuing from "FIG. 4", as shown in the figure.

The other end of the hollow cannula 21 is provided with at least a notch 212 to form a plurality of elastic jaws 213. Here, "the other end of the hollow cannula 21" refers to the position of the hollow cannula 21 relative to the first assembly part S1, that is, the position where the porous implant 10 is pushed out from the hollow cannula 21. At least one mark 214 is provided on the outer surface of the elastic jaw 213. The mark 214 is, for example but not limited to, a scale, or a combination of scale and text and/numbers (not shown in the figure).

In one embodiment, as shown in (a) of FIG. 5 , the thickness of the plurality of elastic clamping claws 213 gradually increases from the inner end to the outer end of the hollow cannula 21 . In another embodiment, the difference from the previous embodiment is that, as shown in (b) of “ FIG. 5 ”, the thicknesses of the plurality of elastic jaws 213 from the inner end to the outer end of the hollow cannula 21 are approximately the same, and the elastic jaws 213 are gradually inclined inward. In the above-mentioned two embodiments, the inner diameter ID2 formed between the ends of the plurality of elastic jaws 213 is smaller than the original inner diameter ID1 of the hollow cannula 21. When the push rod 22 pushes the porous implant 10 to the position of the elastic jaws 213, a little resistance is provided to remind the donor that the porous implant 10 has been pushed between the plurality of elastic jaws 213. When the push rod 22 continues to push the porous implant 10, the elastic jaws 21 3. Push the plurality of elastic jaws 213 to deform outward, so as to facilitate pushing out the porous implant 10 from the hollow cannula 21.

Next, please refer to "Figure 6", which is a schematic diagram of the action of the push rod of the medical implant device in different positions of the hollow cannula.

First, put the porous implant 10 into the hollow cannula 21, and then insert the push rod 22 into the hollow cannula 21, as shown in (a) of "Fig. After the patient position where the porous implant 10 is to be placed, continue to rotate the push rod 22 in the direction of arrow A and simultaneously push the porous implant 10 in the hollow cannula 21 until the stopper 211 limits the push rod 22 and cannot continue to rotate in the direction of arrow A. At this time, the pushing block 2212 of the push rod 22 will completely push out the porous implant 10 in the hollow cannula 21, as shown in (b) of "Fig. Into the purpose of the porous implant 10. Conversely, turn the push rod 22 in the opposite direction of the arrow A until the first assembly part S1 is separated from the second assembly part S2, and then the push rod 22 can be pulled out from the hollow cannula 21 .

To sum up, the medical implant device of this invention uses the push rod to move linearly and gradually in the hollow cannula, thereby slowly pushing the porous implant placed in the hollow cannula, so as to achieve the effect of inserting and fixing the porous implant in the patient's body.

The invention has been explained in detail above, but the above is only one of the preferred embodiments of the invention, and should not limit the scope of the implementation of the invention, that is, all the equal changes and modifications made according to the patent scope of the invention should still be covered by the patent of the invention.

100: Medical Implants

10: Multiporous implants OD1: Outer diameter 20: Implantation aids 21: Hollow intubation 211: stopper 212: Grooving 213: Elastic jaw 214: mark S1: The first assembly department ID1: inner diameter ID2: inner diameter C: axis 22: putter 221: Rod 2211: rod body 2212: push block 222: Grip 2221: Grip body 2222:Boss G: Groove S2: The second assembly department OD2: Outer diameter OD3: outer diameter A: arrow

Figure 1 is a schematic diagram of the appearance of the medical implant device created by this invention.

Figure 2 is an exploded schematic diagram of the medical implant device of this invention.

Fig. 3 is an exploded schematic diagram of another perspective of the medical implant device of the present invention.

Figure 4 is a schematic cross-sectional view of the medical implant device of this invention.

FIG. 5, (a) and (b) are partially enlarged cross-sectional schematic diagrams of different embodiments continuing from FIG. 4 .

Figure 6, (a) to (b) are schematic diagrams of the movement of the push rod of the inventive medical implant device moving to different positions relative to the hollow cannula.

100: Medical Implants

10: Multiporous implants

20: Implantation aids

21: Hollow intubation

211: stopper

212: Grooving

213: Elastic jaw

214: mark

S1: The first assembly department

22: putter

221: Rod

2211: rod body

2212: push block

222: Grip

2221: Grip body

2222:Boss

Claims (12)

A medical implant device comprising: a multiporous implant; and An implantation aid, comprising a hollow cannula for accommodating the porous implant, and a push rod with one end inserted into the hollow cannula. A first assembly portion is provided on one end of the hollow cannula. A second assembly portion is provided on one end of the push rod. The push rod is combined with the first assembly portion via the second assembly to be mounted on the hollow cannula. The push rod moves linearly along the axial direction of the hollow cannula to push the porous to the other end of the hollow cannula. implants. The medical implant device as claimed in claim 1, wherein the first assembling part is screwed with the second assembling part to progressively push the porous implant in the hollow cannula. The medical implant device according to claim 1, wherein the push rod includes a rod inserted into the hollow cannula, and a handle disposed at one end of the rod. The medical implant device as claimed in claim 3, wherein the rod includes a rod body and a pushing block disposed at the end of the rod body. The medical implant device according to claim 4, wherein the outer diameter of the pushing block is larger than the outer diameter of the rod body and equal to or smaller than the inner diameter of the hollow cannula. The medical implant device as claimed in claim 4, wherein the top side of the pushing block is substantially flush with or slightly protrudes from the other end of the hollow cannula to completely push out the porous implant. The medical implant device according to claim 3, wherein the handle includes a handle body having a groove for the rod to be disposed therein, and a boss disposed on the outer edge of the groove. The medical implant device according to claim 7, wherein a stopper against which the boss abuts is arranged on the outer periphery of the hollow cannula so as to limit the push rod relative to the hollow cannula. The medical implant device according to claim 8, wherein at least a slit is provided on the other end of the hollow cannula to form a plurality of elastic jaws. The medical implant device according to claim 7, wherein the first assembling part is an external thread provided on the outer peripheral side of one end of the hollow cannula, and the second assembling part is an internal thread provided on the inner peripheral side of the groove and screwed with the external thread. The medical implant device according to claim 1, wherein the outer diameter of the porous implant is equal to or smaller than the inner diameter of the hollow cannula. The medical implant device according to claim 1, wherein the porous implant is made of a bioabsorbable polymer material.

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