CN113288529A - Prosthesis extractor, broach extractor and prosthesis extracting device - Google Patents

Abstract

The present disclosure provides a prosthesis extractor, a broach extractor and a prosthesis extractor, the prosthesis extractor characterized in that includes: the two opposite ends of the rod body are respectively a near end and a far end; the electric drill joint is used for being connected with an external electric drill and is arranged at the near end; and the cutter head is used for rotating at the part of the prosthesis to be taken out so as to cut the part of the prosthesis to be taken out, and the cutter head is arranged at the far end. The prosthesis extractor, the broach extractor and the prosthesis extracting device provided by the embodiment of the disclosure can shorten the time for extracting the prosthesis, reduce the damage to the part of the patient from which the prosthesis is to be extracted, and enable the patient to recover the health as soon as possible.

Description

Prosthesis extractor, broach extractor and prosthesis extracting device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a prosthesis extractor, a broach extractor and a prosthesis extractor.

Background

Some patients may experience prosthesis breakage after several years of implantation of the prosthesis in the body. Taking the broach as an example, after the prosthesis is broken, the section of the prosthesis is flush with the bone interface, and particularly, the biological type fixed prosthesis is integrated with the bone of a patient, so that the problem that the prosthesis can be taken out without damaging the bone of the patient is always troubled for medical workers. In the related art, a special tool for taking out a broken broach does not exist, the broach needs to be taken out by using a bone knife or a bone raiser in combination with a large-force forceps under general conditions, and the prosthesis taking mode by using the bone knife or the bone raiser and other tools has the disadvantages of great damage to the bone of a patient and long operation period.

Disclosure of Invention

The embodiment of the disclosure provides a prosthesis extractor, a broach extractor and a prosthesis extractor, which can shorten the time for extracting a prosthesis, reduce the damage to the part of the prosthesis to be extracted of a patient and enable the patient to recover the health as soon as possible.

The technical scheme provided by the embodiment of the disclosure is as follows:

the disclosed embodiments provide a prosthesis extractor, comprising:

the two opposite ends of the rod body are respectively a near end and a far end;

the electric drill joint is used for being connected with an external electric drill and is arranged at the near end;

and the cutter head is used for rotating at the part of the prosthesis to be taken out so as to cut the part of the prosthesis to be taken out, and the cutter head is arranged at the far end.

Illustratively, the cutter head is a hollow annular structure, and the central axis of the cutter head is collinear with the axis of the rod body.

Illustratively, the tool bit comprises a tool face for contacting a prosthesis to be removed, and the tool face is serrated.

Illustratively, the shank, the tool bit and the power drill bit are connected as a unitary structure.

Illustratively, the electric drill head is a columnar chuck structure, and the cross section of the electric drill head in the direction perpendicular to the axis of the rod body is polygonal.

Illustratively, the polygon includes a triangle or a hexagon.

Illustratively, the rod body is a hollow rod-shaped structure, and at least one hollow unit is arranged on the side wall of the rod body.

Exemplarily, there are at least three fretwork units along the circumference evenly distributed of this body of rod on the lateral wall of the body of rod, and each the fretwork unit is along the rectangular hole of the axial direction extension of the body of rod.

The embodiment of the disclosure also provides a broach extractor which adopts the prosthesis extractor provided by the embodiment of the disclosure.

Embodiments of the present disclosure also provide a prosthesis extraction device, including:

the prosthesis extractor provided by the embodiments of the present disclosure;

and the output end of the electric drill is connected with the electric drill joint.

The beneficial effects brought by the embodiment of the disclosure are as follows:

above-mentioned scheme has designed a special false body and has taken out instrument, promptly false body extractor, this false body extractor include the body of rod, electric drill joint and tool bit, and the near-end of the body of rod is the electric drill joint, can be connected with the electric drill, and the distal end of the body of rod is the tool bit, can be waiting to take out the rotatory cutting in false body position. When the prosthesis is taken out, taking the broach as an example, the cutter head is controlled to be aligned with the broach, and the electric drill is rotated to enable the cutter head to grind and cut around the broach, so that a gap is formed around the broach, and the prosthesis can be taken out conveniently.

The prosthesis extractor, the broach extractor and the prosthesis extracting device provided by the embodiment of the disclosure can shorten the time for extracting the prosthesis, reduce the damage to the part of the prosthesis to be extracted of a patient, reduce the amount of bleeding of the patient in the operation and enable the patient to recover the health as soon as possible.

Drawings

Figure 1 illustrates a front view of a prosthetic extractor in some embodiments provided by the present disclosure.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

FIG. 1 is a front view of a prosthesis extractor provided in accordance with an embodiment of the present disclosure.

Referring to fig. 1, a prosthesis extractor provided in an embodiment of the present disclosure includes: the electric drill comprises a rod body 100, an electric drill joint 200 and a tool bit 300, wherein the two opposite ends of the rod body 100 are a near end used for being operated by a doctor conveniently and a far end used for being operated at a position of a prosthesis to be taken out of a patient, the electric drill joint 200 is arranged at the near end, and the electric drill joint 200 is used for being connected with an external electric drill to drive the rod body 100 to rotate; the cutting head 300 is disposed at the distal end and can rotate when the shaft 100 rotates to cut and grind the portion of the prosthesis to be removed.

In the scheme, a special prosthesis extracting tool is designed, namely the prosthesis extractor comprises a rod body 100, an electric drill joint 200 and a cutter head 300, wherein the electric drill joint 200 is arranged at the near end of the rod body 100 and can be connected with an electric drill, and the cutter head 300 is arranged at the far end of the rod body 100 and can be used for rotary cutting at the part of the prosthesis to be extracted. In the process of prosthesis extraction, taking the broach as an example, the cutter head 300 is controlled to be aligned with the broach, and the electric drill is rotated to enable the cutter head 300 to grind and cut around the broach, so that a gap is formed around the broach, and the prosthesis can be conveniently extracted.

The prosthesis extractor provided by the embodiment of the disclosure can shorten the time for extracting the prosthesis, reduce the damage to the part of the patient from which the prosthesis is to be extracted, reduce the amount of bleeding of the patient in the operation, and enable the patient to recover the health as soon as possible.

It should be noted that the prosthesis extractor provided by the embodiments of the present disclosure may be applied to various prosthesis extraction scenarios, including but not limited to needle-shaped or column-shaped prostheses.

In the related technology, when the broach prosthesis is taken out, a bone knife or a bone warping combined powerful clamp is needed to take out the broach, so that the bone damage of a patient is large, the operation period is long, and the prosthesis extractor provided by the embodiment of the disclosure can be used as the broach extractor to reduce the bone damage and shorten the taking-out time and the recovery time of the patient.

The prosthesis extractor provided by the present disclosure will be described in more detail below, taking the prosthesis extractor as an example of a broach extractor.

In some embodiments, as shown in fig. 1, the cutter head 300 has a hollow ring structure, that is, the cross section of the cutter head 300 in the direction perpendicular to the axial direction of the rod 100 is circular, and the central axis of the cutter head 300 is aligned with the axial line of the rod 100, so that the cutter head 300 can rotate around the central axis when the rod 100 rotates.

In the above embodiment, the cutting head 300 has a hollow ring structure, so that the broach can be positioned in the hollow region of the cutting head 300 during the broach extraction operation, that is, the cutting head 300 is wound around the broach, so that when the cutting head 300 rotates, the cutting head can grind and cut around the broach to form a gap, thereby facilitating the extraction of the broach.

It should be understood that the cutting head 300 may not be a hollow ring-shaped structure in practical applications, for example, the cutting head 300 may also be a half ring or an arc shape, etc.

In addition, as shown in fig. 1, in one embodiment, the cutter head 300 includes a cutter surface 310 for contacting a portion from which a prosthesis is to be removed, and the cutter surface 310 is serrated. Specifically, as shown in fig. 1, a plurality of serrations are distributed along the annular circumference of the cutter head 300. Thus, the cutting head 300 has a saw-tooth structure, and can effectively cut hard parts such as bones. Of course, it is understood that the tool tip 300 is not limited to the serrated blade face 310, and may be, for example, a helical blade face 310.

Further, as shown in fig. 1, in some embodiments, the shank 100, the tool bit 300, and the drill bit 200 are connected as a unitary structure. That is, the prosthesis extractor is a unitary structure. This may further include the overall structural strength of the prosthesis extractor, ensuring stability during rotation of the cutting head 300.

In other embodiments, the rod body 100, the tool bit 300 and the electric drill head 200 can be detachably connected, so that the tool bit 300, the rod body 100 or the electric drill head 200 in different models can be replaced for prostheses in different sizes or different prosthesis parts to be taken out, or when the tool bit 300, the rod body 100 or the electric drill head 200 and other parts are damaged, the replacement of new parts is facilitated.

Further, in some embodiments of the present disclosure, the drill tip 200 is a cylindrical collet structure having a polygonal cross-sectional shape in a direction perpendicular to an axis of the rod 100.

Adopt above-mentioned scheme, because electric drill joint 200 mainly used is connected with the electric drill, if electric drill joint 200's cross section is rounding off-round form such as circular, can take place easily electric drill joint 200 and electric drill between the relative slip scheduling problem, and electric drill joint 200 is if the cross section personally submits the polygon, that is to say, electric drill joint 200's periphery is provided with at least one arris, like this, can effectively prevent above-mentioned phenomenon.

For example, the polygon includes a triangle, a hexagon, or the like. That is, the power drill head 200 may be a triangular pillar, a hexagonal pillar, or the like.

In addition, in some embodiments, as shown in fig. 1, the rod 100 is a hollow rod structure, and at least one hollow unit 110 is disposed on a sidewall of the rod 100. Thus, the cutting depth of the rod body 100 at the position of the prosthesis to be taken out, the state of the spareribs and the like can be observed conveniently.

In an exemplary embodiment, as shown in fig. 1, at least three hollow units 110 are uniformly distributed on a side wall of the rod body 100 along a circumferential direction of the rod body 100, and each hollow unit 110 is a long hole extending along an axial direction of the rod body 100.

It should be understood that, the specific number and structure of the hollow units 110 on the rod 100 are not limited, for example, when the length of the rod 100 is longer, in order to ensure the strength of the rod 100, each hollow unit 110 may further include at least two hollow holes sequentially arranged along the axial direction of the rod 100.

In addition, in some embodiments of the present disclosure, the electric drill head 200 is a cylindrical chuck, and the output end of the external electric drill is a hollow trephine, and the cylindrical chuck is sleeved in the hollow trephine to connect the electric drill and the prosthesis extractor.

In addition, as shown in fig. 1, a reinforcing part 400 is provided between the rod body 100 and the drill tip 200, and the reinforcing part 400 is used for ensuring the connection strength between the rod body 100 and the drill tip 200.

In addition, it should be noted that the prosthesis extractor provided by the embodiment of the present disclosure may be equally divided into a plurality of specifications according to the type of prosthesis, and the sizes of the rod 100, the tool bit 300 and the power drill bit 200 are not limited.

For example, the range a of the outer diameter dimension of the reinforcement part 400 may be 10-32 mm, for example, in a series of prosthesis extractors with different specifications, the outer diameter dimension of the reinforcement part 400 may be designed for one dimension specification by increasing the outer diameter dimension by 1 mm;

the range B of the outer diameter dimension of the cutter head 300 can be 8-30 mm, for example, in a series of prosthesis extractors with different specifications, the outer diameter dimension of the cutter head 300 can be designed for one dimension specification by increasing the outer diameter dimension by 1 mm;

the length C between the reinforcing part 400 and the tool face 310 of the tool bit 300 in the axial direction of the shaft body 100 may range from 60mm to 200mm, for example, in a series of prosthesis extractors of different specifications, the length C may be designed for one size specification by increasing 5 mm;

the length D of the hollow hole in the axial direction of the rod body 100 may range from 50mm to 180mm, for example, in a series of prosthesis extractors of different specifications, the length D may be increased by 5mm every time, and is designed for one size specification;

the value range of the width E of the hollow hole in the circumferential direction of the rod body 100 may be: 6mm to 12mm, for example, in a series of different sizes of said prosthesis extractor, the width E may be designed for one size for each 1mm increase;

the length F between the electric drill head 200 and the tool face 310 of the tool bit 300 in the axial direction of the rod body 100 may range from 78mm to 218mm, for example, in a series of prosthesis extractors of different specifications, the length F may be increased by 5mm for each size specification.

In addition, the embodiment of the disclosure also provides a broach extractor which adopts the prosthesis extractor provided by the embodiment of the disclosure.

In addition, the embodiment of the disclosure also provides a prosthesis extraction device which comprises the broach extractor provided by the embodiment of the disclosure and a power drill, wherein the output end of the power drill is connected with the power drill joint 200.

Obviously, the broach extractor and the prosthesis extractor provided in the embodiments of the present disclosure can also bring about the beneficial effects brought by the prosthesis extractor provided in the embodiments of the present disclosure, and are not described herein again.

The following points need to be explained:

(1) the drawings of the embodiments of the disclosure only relate to the structures related to the embodiments of the disclosure, and other structures can refer to the common design.

(2) For purposes of clarity, the thickness of layers or regions in the figures used to describe embodiments of the present disclosure are exaggerated or reduced, i.e., the figures are not drawn on a true scale. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element or intervening elements may be present.

(3) Without conflict, embodiments of the present disclosure and features of the embodiments may be combined with each other to arrive at new embodiments.

The above is only a specific embodiment of the present disclosure, but the scope of the present disclosure is not limited thereto, and the scope of the present disclosure should be determined by the scope of the claims.

Claims (10)

1. A prosthesis extractor, comprising:

the two opposite ends of the rod body are respectively a near end and a far end;

the electric drill joint is used for being connected with an external electric drill and is arranged at the near end;

and the cutter head is used for rotating at the part of the prosthesis to be taken out so as to cut the part of the prosthesis to be taken out, and the cutter head is arranged at the far end.

2. The prosthetic extractor of claim 1,

the cutter head is of a hollow annular structure, and the central axis of the cutter head and the axis of the rod body are on the same straight line.

3. The prosthetic extractor of claim 2,

the cutter head comprises a cutter surface used for contacting with the part of the prosthesis to be taken out, and the cutter surface is serrated.

4. The prosthetic extractor of claim 1,

the rod body, the tool bit and the electric drill joint are connected into an integral structure.

5. The prosthetic extractor of claim 1,

the electric drill joint is of a columnar chuck structure, and the cross section of the electric drill joint in the direction perpendicular to the axis of the rod body is polygonal.

6. The prosthetic extractor of claim 5,

the polygon comprises a triangle or a hexagon.

7. The prosthetic extractor of claim 1,

the rod body is of a hollow rod-shaped structure, and at least one hollow-out unit is arranged on the side wall of the rod body.

8. The prosthetic extractor of claim 7,

at least three hollowed-out units are uniformly distributed on the side wall of the rod body along the circumferential direction of the rod body, and each hollowed-out unit is a long hole extending along the axial direction of the rod body.

9. An intramedullary pin extractor, characterized in that it uses a prosthetic extractor according to any one of claims 1 to 8.

10. A prosthesis extraction device, comprising:

the prosthesis extractor of any one of claims 1 to 8;

and the output end of the electric drill is connected with the electric drill joint.

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