CN218739012U - Retracting device and medical equipment - Google Patents

Abstract

The embodiment of the application relates to the technical field of medical instruments, and particularly discloses a retracting device and medical equipment, wherein the retracting device comprises an expansion piece and a guide piece, the expansion piece is provided with an expansion hole which is communicated along a preset direction, and the expansion piece is provided with a first end and a second end which are oppositely arranged along the preset direction; the guide piece is provided with an accommodating hole extending along the preset direction, the guide piece is inserted into the expansion hole, at least part of the guide piece extends out of the second end, and at least part of the guide piece extending out of the second end can be transparent. Through the mode, the endoscope or the ventriculoscope can be accommodated in the accommodating hole and take images from the second end, so that a doctor can conveniently position a focus, and the movement of the retracting device is reduced.

Description

Retracting device and medical equipment

Technical Field

The embodiment of the application relates to the technical field of medical instruments, in particular to a retracting device and medical equipment.

Background

Ventricular hemorrhage is a common acute and serious disease of the nervous system. Among them, the ventricular hemorrhage cast is a common type of ventricular hemorrhage, is liable to cause acute severe hydrocephalus, has high lethality rate, and requires an emergency treatment for hematoma removal operation and dredging the cerebrospinal fluid circulation pathway. For brain surgery, especially for operations at deeper sites, where the surgical field is narrow and deep, surgeons often need the assistance of retractors, which are a type of medical instruments that come into contact with human body tissues while performing the surgical operation in order to obtain the surgical field and the surgical space. These retractors are introduced into the brain tissue during surgery and then pulled forcefully to separate or lift the brain tissue for the surgery to be performed.

However, in the course of carrying out the present application, the inventors of the present application found that: at present, the traditional retractor is worn blindly according to experience or guided by navigation or stereotactic guidance when in use, the retractor is delivered to a target point, and the puncture process is invisible. However, the brain tissue is very soft and delicate, especially under the condition of brain injury, ischemia or encephaledema, the retractor is easy to directly press to cause local brain tissue contusion, local brain tissue ischemia under a brain pressing plate can be caused, complications of retraction injury can occur, and the degree of retraction injury of the brain tissue is easily aggravated by the movement of the retractor.

SUMMERY OF THE UTILITY MODEL

The technical problem that this application embodiment mainly solved provides a retractor device and medical equipment, can install the endoscope or to realize visual puncture, reduce the removal of retractor.

In order to solve the technical problem, the application adopts a technical scheme that: the retracting device is used for retracting human tissues and comprises an expanding piece and a guide piece, wherein the expanding piece is provided with an expanding hole which is communicated along a preset direction, and the expanding piece is provided with a first end and a second end which are oppositely arranged along the preset direction; the guide piece is provided with an accommodating hole extending along the preset direction, the guide piece is inserted into the expansion hole, at least part of the guide piece extends out of the second end, and at least part of the guide piece extending out of the second end can be transparent.

Optionally, the guide comprises: the base body is arranged in the base body in a penetrating mode, is inserted into the expansion hole and partially extends out of the second end; and the sheath guiding head is sleeved on the part of the substrate extending out of the second end, and at least part of the sheath guiding head can transmit light.

Optionally, the sheath guiding head is provided with a mounting hole penetrating along the preset direction, the base part is inserted into the mounting hole, and the mounting hole is communicated with the accommodating hole; the guide piece comprises a lens, and the lens is embedded in one side, far away from the base body, of the mounting hole.

Optionally, the retraction device comprises a mounting unit comprising a body mounted to the first end, the base being mounted to the body.

Optionally, the main body includes a column portion, the column portion is provided with a guide hole penetrating in a preset direction, the base is mounted on the column portion, and the guide hole is communicated with the receiving hole; the mounting unit comprises a clamping piece, the column body portion is provided with a first side and a second side which are oppositely arranged along a preset direction, the clamping piece is embedded in the first side, and the clamping piece is provided with a clamping portion extending into the guide hole.

Optionally, the base is bolted to the column portion.

Optionally, one of the clamping piece and the column body part is provided with a protrusion, and the other is provided with a groove, and the protrusion is accommodated in the groove.

Optionally, the mounting unit further includes a fixing member, the fixing member is sleeved on the first side, and the fixing member is adhered to the column portion.

Optionally, the main body comprises a mounting part formed by extending the column part outwards; one side, far away from the column body part, of the mounting part extends along the preset direction and deviates from the first side to form a mounting wall, and the mounting wall extends towards the column body part to form a positioning block; the mounting part deviates from the clamping part along the preset direction and extends to form a propping rib plate; one side of the expansion piece, which is close to the first end, extends outwards to form a flange, and the flange is clamped and arranged between the positioning block and the abutting rib plate in the preset direction.

Optionally, a positioning protrusion is arranged on one side of the flange close to the second end, a positioning groove is arranged on one side of the positioning block close to the first side, and the positioning protrusion is clamped in the positioning groove.

Optionally, the flange is provided with a through groove, and the through groove is perpendicular to the preset direction and is matched with the positioning block.

Optionally, the expansion element is provided with a handle at the second end.

Optionally, the profile of the expansion element decreases progressively in a predetermined direction from the first end towards the second end.

Optionally, the outer side of the expansion piece is provided with a scale arranged along a preset direction.

According to another aspect of embodiments of the present application, there is provided a medical device comprising a retraction apparatus as described above.

The beneficial effects of the embodiment of the application are that: different from the situation of the prior art, the guide piece of the embodiment of the application is provided with the accommodating hole, at least part of the guide piece extending out of the second end can transmit light, and the endoscope or the ventriculoscope can be accommodated in the accommodating hole and take images from the second end, so that a doctor can conveniently position a focus, and the movement of the retracting device is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for a person skilled in the art to obtain other drawings based on the drawings without any creative effort.

Fig. 1 is a schematic perspective view of a retraction device according to an embodiment of the present application;

fig. 2 is an exploded view of a retraction device according to an embodiment of the present application;

fig. 3 is a perspective view of the retractor device of the embodiment of the present application with an electronic camera device mounted thereon;

FIG. 4 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a schematic perspective view of an extender according to an embodiment of the present application;

FIG. 6 is an exploded schematic view of a guide of an embodiment of the present application;

FIG. 7 is a schematic perspective view of a lens according to an embodiment of the present application;

FIG. 8 is an exploded view of a mounting unit of an embodiment of the present application;

fig. 9 is a cross-sectional view of fig. 2 taken along line B-B.

Detailed Description

In order to facilitate an understanding of the present application, the present application is described in more detail below with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

A retracting device 1 is used for retracting human tissues, and please refer to fig. 1 to 4, fig. 1 and 2 showbase:Sub>A perspective view and an exploded schematic view of the retracting device of the embodiment of the application, fig. 3 showsbase:Sub>A perspective view of the retracting device of the embodiment of the application with an electronic camera device installed, and fig. 4 showsbase:Sub>A cutting schematic view of fig. 3 along the line A-A. The retractor device 1 comprises an expansion piece 100 and a guide piece 200, wherein the expansion piece 100 is provided with an expansion hole 101 penetrating along a preset direction X, and the expansion piece 100 is provided with a first end 102 and a second end 103 oppositely arranged along the preset direction X. The guiding element 200 is provided with an accommodating hole 201 extending along the predetermined direction X, the guiding element 200 is inserted into the expanding hole 101, at least a portion of the guiding element 200 extends out of the second end 103, and at least a portion of the guiding element 200 extending out of the second end 103 is transparent.

Referring to fig. 5, fig. 5 is a perspective view of the expansion element 100 according to the embodiment of the present disclosure, and referring to fig. 1 to 4, the material of the expansion element 100 is plastic, such as polyethylene, polypropylene, etc. The expansion piece 100 is in a circular truncated cone shape and extends along a preset direction X, the expansion piece 100 is provided with a first end 102 and a second end 103 which are oppositely arranged along the preset direction X, the first end 102 points to the second end 103 along the preset direction X, and the outline of the expansion piece 100 is gradually reduced. The expanding piece 100 is provided with an expanding hole 101 penetrating along a preset direction X, the expanding hole 101 is in a circular truncated cone shape and is matched with the expanding piece 100, and the expanding hole 101 is used for accommodating the guide piece 200. The first end 102 is used for extending into a human body, and the second end 103 is used for operation when a doctor performs an operation. It should be noted that, the specific shapes of the expansion piece 100 and the expansion hole 101 are not limited in the present application, the expansion piece 100 is designed in a truncated cone shape, so that after a doctor inserts the smaller first end 102 into a human body, the expansion piece 100 can retract human tissues along with the insertion of the expansion piece 100, and the expansion operation channel is expanded, and the cross section of the expansion piece 100 is designed in a circular shape, so that the edge angle is reduced, thereby reducing the influence of the expansion piece 100 on the human tissues when the expansion piece 100 is inserted into the human body, but the present application does not limit the specific shape of the expansion piece 100, and in other embodiments of the present application, the expansion piece 100 may be in the shape of a frustum of a prism, a cylinder, a prism, or the like; in the embodiment of the present application, the material of the expansion element 100 is a plastic material, and the expansion hole 101 is adapted to the shape of the expansion element 100 in order to keep the wall thickness of the expansion element 100 consistent, but the present application does not limit the specific shape of the expansion hole 101, and in other embodiments of the present application, the expansion hole 101 may not be adapted to the expansion element 100, and may have a prism, or a prism shape. It should be further noted that, for more sanitary and safe purposes, the retractor device 1 of the embodiment of the present application is a disposable product, the material of the expansion piece 100 is plastic, which can reduce the production cost of the retractor device 1, and the material of the plastic is relatively soft, which causes less damage to human tissues when retracting the human tissues, but the present application does not limit the specific material of the expansion piece 100, and in other embodiments of the present application, the material of the expansion piece 100 may also be metal, ceramic, and the like. It should be understood that, the present application does not limit the extent of the contraction of the profile of the expansion element 100 and the diameters of the expansion element 100 at the first end 102 and the second end 103 along the preset direction X, and for operations with larger lesions such as cerebral hemorrhage or cerebral hematoma removal, the electronic camera device 2 is selected as an endoscope, and the adopted extent of the contraction of the profile of the expansion element 100 and the diameters of the expansion element 100 at the first end 102 and the second end 103 are both larger, so as to facilitate retracting more body components, exposing the lesions, and facilitating the operations; for minimally invasive surgery, the electronic imaging device 2 at this time is selected as an electronic imaging device 2 with a surgical channel such as a ventriculoscope, and the outline shrinkage degree of the adopted expansion piece 100 and the diameters of the expansion piece 100 at the first end 102 and the second end 103 are both small, so that the expansion hole 101 can accommodate the electronic imaging device 2, wherein in the above description, the large ratio and the small ratio of the shrinkage degree and the diameters are compared with those of the expansion pieces 100 in the two types of electronic imaging devices 2.

Preferably, the handle 110 is disposed at the second end 103 of the expansion member 100, the handle 110 includes a holding portion 111, a connecting portion 112 and a fixing portion 113 connected in sequence, the handle 110 is in a "Z" shape with an obtuse angle, the holding portion 111 and the fixing portion 113 extend perpendicular to the preset direction X, the fixing portion 113 is fixed at the second end 103 of the expansion member 100, and the connecting portion 112 extends away from the first end 102, so that in the preset direction X, the projection of the holding portion 111 and the projection of the main body 310 of the expansion member 100 do not overlap, thereby facilitating the doctor to hold the handle 110 at a position relatively far away from the second end 103 during operation. The joint of the handle 111 and the connecting part 112 is provided with a rib plate, so that the strength of the handle 110 is enhanced. The side of the hand-held portion 111 away from the connecting portion 112 is provided with cylindrical anti-slip grooves 111a arranged in a matrix, so that the friction between the hand and the hand-held portion 111 is increased, and the probability of slipping when the handle 110 is held is reduced. It should be noted that in the present embodiment, the material of the expansion member 100 is plastic and is directly injection molded, and the handle 110 is integrally formed with the expansion member 100 in order to reduce the installation steps between the parts, but it should be understood that in other embodiments of the present invention, the handle 110 may be separately provided from the expansion member 100, and the handle 110 may be installed on the expansion member 100 by snapping, screwing or the like. It should be noted that the present application does not limit the specific shape of the handle 110, for example, in other embodiments of the present application, the handle 110 may also be a rod perpendicular to the preset direction X, so as to be convenient for holding during operation.

Preferably, the outside of the expansion element 100 is provided with graduations (not shown) arranged along a predetermined direction X, so as to facilitate the doctor to judge the depth of the retraction device 1 inserted into the human body.

Referring to the above-mentioned guide 200, specifically to fig. 6, fig. 6 is an exploded view of the guide according to the embodiment of the present disclosure, and fig. 1 to 4 are combined. The guide member 200 includes a base 210 and a sheath head 220, the base 210 is a cylindrical tubular structure extending along a predetermined direction X, the base 210 is provided with a cylindrical receiving hole 201 extending along the predetermined direction X, the receiving hole 201 is used for receiving an electronic imaging device 2 such as an endoscope and a ventriculoscope, and the base 210 is inserted into the expanding hole 101 and partially extends out of the second end 103. The sheath head 220 includes a rod portion 221 and an extending portion 222, the rod portion 221 is a cylindrical rod-shaped structure extending along the predetermined direction X, the rod portion 221 is provided with a mounting hole 221a extending along the predetermined direction X, the mounting hole 221a is configured to be sleeved at the second end 103 of the base 210, and the mounting hole 221a is communicated with the receiving hole 201. Since the mounting hole 221a can transmit light, the electronic imaging device 2 can capture an image of the second end 103 through the mounting hole 221 a. The extending portion 222 is formed by extending the rod portion 221 outwards from a side of the base 210 and is disposed around the rod portion 221, a joint of the extending portion 222 and the rod portion 221 is in a hemispherical shell shape, a portion of the extending portion 222 away from the joint of the extending portion 222 and the rod portion 221 is a circular rod extending along a preset direction X, and a reinforcing rib is disposed between the rod portion 221 and the extending portion 222, so as to enhance strength of the sheath guiding head 220. It should be noted that, the present application does not limit the specific shapes of the base 210 and the sheath head 220, in other embodiments of the present application, the base 210 may also be in the shape of a prism, a truncated pyramid, or a circular truncated cone, etc., so that the base 210 may be accommodated in the expansion hole 101 and the expansion piece 100 may extend from the second end 103, and the sheath head 220 may also be in the shape of a prism, a truncated pyramid, or a circular truncated cone, etc., so as to accommodate the electronic imaging apparatus 2; the extending portion 222 of the sheath guiding head 220 is designed in a hemispherical shape, so that the sheath guiding head 220 can conveniently puncture the human tissue, and the damage of the sheath guiding head 220 to the human tissue in the puncturing process is reduced, but in other embodiments of the present application, the sheath guiding head 220 may not be provided with the extending portion 222, and the rod portion 221 can be directly punctured, the rod portion 221 may be in a shape of a prism, a frustum, or a circular truncated cone, and the like, and the mounting hole 221a may not be matched with the base body 210, and may be in a shape of a prism, a frustum, or a circular truncated cone, and the like, so that the mounting hole 221a is used for being sleeved at the second end 103 of the base body 210, and the mounting hole 221a is communicated with the receiving hole 201.

Preferably, the guiding element 200 includes a lens 230, and referring to fig. 7, fig. 7 is a perspective view of the lens according to the embodiment of the present invention, and fig. 6 is combined. The lens 230 is integrally cylindrical and extends along the predetermined direction X, and is adapted to the mounting hole 221a, the lens 230 is embedded in the receiving hole 201 for extending out of the second end 103, a supporting portion 231 is disposed at one end of the lens 230 exposed from the substrate 210, the supporting portion 231 is cylindrical and extends along the predetermined direction X, and one end of the supporting portion 231, which is perpendicular to the predetermined direction X and exposed from the substrate 210, is spherical. The abutting portion 231 abuts against the base 210 in the predetermined direction X, so that the lens 230 is embedded in the guiding element 200 and does not slide into the receiving hole 201 completely. Lens 230 plays the shutoff effect to the part that base member 210 stretches out second end 103, so that the part that accepting hole 201 stretches out second end 103 is sealed relatively, and lens 230 can the printing opacity, thereby make electronic camera equipment 2 shoot under the condition that keeps keeping the isolation with human tissue, thereby protection electronic camera equipment 2, and then avoid electronic camera equipment 2 to shoot under the direct condition with the human subassembly contact, can prevent that electronic camera equipment 2 is direct to contact excessively with human tissue, and prevent that electronic camera equipment 2 from receiving external force when following expansion piece 100 and retracting human tissue and damaging. It should be noted that the design that one end of the supporting portion 231, which is perpendicular to the preset direction X and exposes out of the base 210, is a spherical surface is convenient for assisting in puncturing the sheath head 220, but the present application does not limit the specific shape of the lens 230, in other embodiments of the present application, one end of the supporting portion 231, which is perpendicular to the preset direction X and exposes out of the base 210, may also be a plane, and the whole lens 230 may also be in the shape of a prism, a truncated pyramid, or a circular truncated cone, so as to close the portion of the receiving hole 201 extending out of the second end 103.

Preferably, the sheath head 220 is adhered to the base 210, and in particular, the mounting hole 221a is adhered to the base 210 and a sidewall of the abutting portion 231 perpendicular to the predetermined direction X, where only the spherical surface of the lens 230 protrudes out of the sheath head 220. The sheath head 220 is bonded to the base 210 to further enhance the fixation between the base 210, the sheath head 220, and the lens 230, thereby reducing the possibility of parts misalignment or scattering during the penetration of the introducer 200.

In order to achieve the fixed installation between the guide member 200 and the expansion member 100, the retractor 1 includes a mounting unit 300, please refer to fig. 8 and 9 specifically, fig. 8 illustrates an exploded view of the mounting unit according to an embodiment of the present application, fig. 9 illustrates a cut-away view of fig. 2 along a line B-B, and with reference to fig. 1 to 4, the mounting unit 300 includes a main body 310, the main body 310 includes a column portion 311 and a mounting portion 312 formed by extending the column portion 311 outward, the guide member 200 is mounted on the column portion 311, and the mounting portion 312 is mounted on the first end 102 of the expansion member 100. Next, the guide 200 and the attachment between the expander 100 and the main body 310 will be described from the structures of the column portion 311 and the attachment portion 312, respectively.

For the column portion 311, the column portion 311 is cylindrical extending along the predetermined direction X, the column portion 311 is provided with a guide hole 311a penetrating along the predetermined direction X, the whole guide hole 311a is cylindrical extending along the predetermined direction X, the guide hole 311a is provided with an annular guide protrusion 311a1 at about one half of the predetermined direction X, the column portion 311 is provided with a first side 311b and a second side 311c opposite to each other along the predetermined direction X, and the guide protrusion 311a1 is provided with a chamfer at a position close to the first side 311 b. The guide hole 311a is provided with a thread 311a2 near the second side 311c, the outer sidewall of the base 210 is provided with a thread flange 211 at a side away from the sheath head 220, the thread flange 211 is screwed to the thread 311a2, so that the guide member 200 is mounted on the column 311, and at this time, the guide hole 311a is communicated with the receiving hole 201, and the center axes are on the same straight line. In other embodiments of the present invention, the column portion 311 and the guide hole 311a may have a prism shape, a truncated pyramid shape, or a truncated cone shape, so that the electronic image pickup apparatus 2 can be accommodated in the guide hole 311 a. It should be noted that, the present application does not limit the specific installation manner of the base 210 on the column 311, in another embodiment of the present application, the screw 311a2 may be further disposed on an outer side wall of the column 311, the screw flange 211 may be disposed on a side of the receiving hole 201 away from the sheath head 220, the screw flange 211 is screwed to the screw 311a2, so that the base 210 is screwed to the column 311, and in another embodiment of the present application, the base 210 may also be fixed to the column 311 by snapping or inserting, so as to communicate the guiding hole 311a with the receiving hole 201, and receive the electronic imaging device 2 together.

For the mounting portion 312, the mounting portion 312 is formed by extending an outer side wall of the cylinder portion 311 outward, the mounting portion 312 is a circular ring plate-shaped structure perpendicular to the preset direction X, one side of the mounting portion 312, which is far away from the cylinder portion 311, extends away from the first side 311b along the preset direction X to form a circular ring-shaped mounting wall 312a, the mounting wall 312a extends toward the cylinder portion 311 to form a rectangular block 312a1, and the mounting portion 312 extends away from the first side 311b along the preset direction X to form a circular ring-shaped abutting rib plate 312b. Rib plates are provided between the column part 311, the abutting rib plate 312b, and the mounting wall 312a, thereby reinforcing the strength of the main body 310. Wherein, perpendicular to the predetermined direction X, the inner diameter of the abutting rib plate 312b is smaller than the diameter of the expanding hole 101 at the second end 103. The outer side wall of the extender 100 adjacent the first end 102 extends outwardly to form a flange 120, the flange 120 is annular, and the handle 110 is attached to the flange 120. In the preset direction X, the distance between the side of the positioning block 312a1 close to the mounting portion 312 and the mounting portion 312 is a first distance, the extending length of the abutting rib plate 312b is a second distance, the projection length of the flange 120 is a third distance, and the difference between the first distance and the second distance is equal to the third distance, that is, the flange 120 is clamped between the positioning block 312a1 and the abutting rib plate 312b in the preset direction X, so that the mounting portion 312 and the expansion member 100 are clamped and fixed in the preset direction X. Furthermore, a hemispherical positioning groove 312a11 is disposed on one side of the positioning block 312a1 close to the mounting portion 312, a positioning protrusion 121 adapted to the positioning groove 312a11 is disposed on one side of the flange 120 close to the second end 103, and the positioning protrusion 121 is clamped in the positioning groove 312a11, so as to prevent the mounting portion 312 and the expansion member 100 from rotating on a plane perpendicular to the predetermined direction X, thereby achieving the fixed mounting of the mounting portion 312 and the expansion member 100. It should be noted that the specific shapes of the mounting portion 312, the abutting rib plate 312b, the mounting wall 312a, and the positioning block 312a1 are not limited in the present application, and in other embodiments of the present application, the mounting portion 312 may also be a polygonal plate-shaped structure formed by extending the column portion 311; the abutting rib plate 312b, the mounting wall 312a and the positioning block 312a1 may also be in the shape of a fan ring, a prism, or the like, so as to realize the arrangement of the positioning block 312a1 in the main body 310 and meet the requirement of the distance between the mounting portion 312 and the positioning block 312a1 and the mounting wall 312a, that is, meet the requirement that the flange 120 is clamped between the positioning block 312a1 and the abutting rib plate 312b in the preset direction X.

Preferably, the number of the positioning blocks 312a1 is 3, 3 positioning blocks 312a1 are arranged on the mounting wall 312a in a circumferential array, and the arrangement of the 3 positioning blocks 312a1 is favorable for increasing the holding area of the main body 310 and the flange 120, so as to prevent the main body 310 and the flange 120 from being unbalanced due to the force to affect the installation of the main body 310 on the expansion member 100 under the condition of only one contact point. Only 1 of the 3 positioning blocks 312a1 is provided with a positioning groove 312a11, so as to position the main body 310 on the expansion element 100 perpendicular to the predetermined direction X. It should be noted that, the number of the positioning blocks 312a1 is not limited in the present application, and in other embodiments of the present application, the number of the positioning blocks 312a1 may be 2, 5, or the like, and a plurality of positioning blocks 312a1 are disposed on the mounting wall 312a in a circumferential array. It should be understood that in the present embodiment, the mounting wall 312a is annular, so the plurality of positioning blocks 312a1 are disposed on the mounting wall 312a in a circumferential array, but in other embodiments, when the mounting portion 312 is the cylinder portion 311 extending to form a polygonal plate-shaped structure, the plurality of positioning blocks 312a1 are disposed at intervals around the outer contour of the mounting portion 312.

Preferably, the flange 120 is provided with through slots 122, the through slots 122 are matched with the positioning protrusions 121 in a direction perpendicular to the predetermined direction X, the number of the through slots 122 is 3, and 3 through slots 122 are provided on the flange 120 corresponding to 3 positioning protrusions 121. The through slot 122 is used for mounting the positioning block 312a1 on the expansion member 100 from the first end 102 toward the direction close to the second end 103, so that the flange 120 can be mounted between the positioning block 312a1 and the abutting rib plate 312b in a rotationally misaligned manner.

Preferably, the mounting wall 312a is provided with an opening groove 312a2, the opening groove 312a2 is disposed on the mounting wall 312a and disposed to avoid the positioning block 312a1, and the opening groove 312a2 is used to abut against the handle 110, so as to reduce the rotation angle of the main body 310 when mounted on the expansion piece 100, thereby facilitating the clamping and mounting of the positioning groove 312a11 and the positioning protrusion 121.

Preferably, the mounting wall 312a is provided with a plurality of anti-slip grooves 111a, the anti-slip grooves 111a are located on an outer side wall of the mounting wall 312a perpendicular to the predetermined direction X, and the plurality of anti-slip grooves 111a are distributed along a circumferential direction of the mounting wall 312a at intervals and are located at positions avoiding the opening groove 312a 2. The provision of the anti-slip groove 111a may increase the friction between the hand and the main body 310, thereby facilitating the mounting of the main body 310 on the extender 100.

Preferably, in order to facilitate the electronic image capturing apparatus 2 to be relatively fixed on the retracting device 1, the mounting unit 300 includes a clamping member 320, the clamping member 320 is integrally in a shape of a circular column extending along the predetermined direction X, the clamping member 320 is embedded in the first side 311b of the column portion 311, the clamping member 320 is provided with a clamping portion 321 extending into the guide hole 311a, the clamping portion 321 includes an extending end 321a extending along the predetermined direction X from the clamping member 320 inside the circular column and a clamping end 321b arranged at a certain angle with the predetermined direction X, the extending end 321a is connected to the clamping end 321b, the extending end 321a of the clamping end 321b is in a shape of a circular column, the clamping end 321b is in a shape of a circular truncated cone side wall, and in the predetermined direction X, a side of the clamping end 321b connected to the extending end 321a points to a side of the clamping end 321b away from the extending end 321a, and a contour of the clamping end 321b is reduced. Specifically, the clamping member 320 is provided with an annular groove 322 extending along the preset direction X, a protrusion 311d is disposed on one side of the column portion 311 away from the mounting wall 312a, the protrusion 311d is annular and extends along the preset direction X and is matched with the groove 322, and the protrusion 311d is accommodated in the groove 322, so that the clamping member 320 is embedded in the column portion 311. The clamping member 320 is made of elastic plastic, the electronic image capturing device 2 is inserted into the clamping portion 321, and the clamping portion 321 is tightly fitted with the electronic image capturing device 2, so that the electronic image capturing device 2 is fixed to the retracting device 1. It should be noted that the present application does not limit the specific shapes of the protrusion 311d and the groove 322, and in other embodiments of the present application, the protrusion 311d and the groove 322 may also be fan-ring-shaped or prism-shaped, so that the clamping member 320 is embedded in the column portion 311. It should be noted that the present application does not limit the specific structure of the clamping member, for example, in some embodiments of the present application, the clamping portion 321 may be a clamping arm extending into the guide hole 311a to clamp the electronic imaging apparatus 2.

Preferably, the mounting unit 300 further includes a fixing element 330, the fixing element 330 is sleeved on the first side 311b of the column portion 311, and the fixing element 330 is adhered to the column portion 311, so as to fix the clamping element 320 on the column portion 311 in a propping manner. The fixing member 330 is used to further enhance the installation of the clamping member 320 on the column 311, and prevent the clamping member 320 from loosening when being embedded in the column 311.

The assembly process of the retractor device 1 will be briefly described below with reference to the accompanying drawings.

1. The lens is embedded in the accommodating hole 201, and the sheath guiding head 220 is inserted and bonded to the base 210;

2. embedding the clamping member 320 in the first side 311b of the column portion 311, and then sleeving and bonding the fixing member 330 on the first side 311b;

3. screwing the guide 200 to the second side 311c of the cylinder portion 311;

4. rotationally mounting the body 310 to the extender 100;

it should be noted that the order of the assembly process described above can be reversed without affecting the normal use of the retraction device 1.

The operation of the retracting device 1 will be briefly described with reference to the accompanying drawings.

1. When the electronic imaging apparatus 2 is an observation scope such as an endoscope:

(1) The electronic camera device 2 sequentially extends into the guide hole 311a and the accommodating hole 201 from the first end 102, so that the electronic camera device 2 is arranged close to the lens 230;

(2) The retracting device 1 extends into an incision which is preset in a human body and retracts human tissue;

(3) Moving the retracting device 1, and positioning the focus through the electronic camera device 2;

(4) Removing the electronic image pickup apparatus 2 from the retracting device 1, and detaching the mounting unit 300 from the extender 100;

(5) The surgical equipment is inserted into the expanding hole 101 for operation;

(6) After the operation is completed, the surgical instrument is removed, and the stent 100 is then removed from the body.

2. When the electronic imaging apparatus 2 is an electronic imaging apparatus 2 having an operation channel such as a ventriculoscope:

(1) The electronic camera device 2 sequentially extends into the guide hole 311a and the accommodating hole 201 from the first end 102, so that the electronic camera device 2 is arranged close to the lens 230;

(2) The retracting device 1 extends into an incision which is preset in a human body and retracts human tissue;

(3) The retracting device 1 is moved, and the focus is positioned through the electronic camera device 2;

(4) Removing the electronic image pickup apparatus 2 from the retractor 1, and detaching the mounting unit 300 from the extender 100;

(5) Removing the guide 200 from the mounting unit 300;

(6) The mounting unit 300 is mounted to the stent 100 again;

(7) The electronic camera device 2 is inserted into the expansion hole 101, and meanwhile, the surgical equipment is inserted into the electronic camera device 2 to perform surgery;

(8) After the operation is completed, the surgical equipment is removed from the electronic camera device 2, the electronic camera device 2 is moved out of the expansion piece 100, and finally the expansion piece 100 is taken out of the human body.

Different from the situation in the prior art, the guide member 200 of the embodiment of the present application is provided with the receiving hole 201, at least a part of the portion of the guide member 200 extending out of the second end 103 can transmit light, and the electronic imaging device 2 such as an endoscope or a ventriculoscope can be received in the receiving hole 201 and take images from the second end 103, so that the whole operation process is visualized, the focus can be conveniently located by a doctor, the movement of the retracting device 1 is reduced, the damage to human tissues in the puncturing process is reduced, and the postoperative recovery of a patient can be facilitated.

Based on the same inventive concept, the present application also provides a medical apparatus, comprising the above-mentioned retracting device 1. Due to the fact that the retraction device 1 is included, visual puncture of the medical equipment can be achieved.

It should be noted that the description of the present application and the accompanying drawings set forth preferred embodiments of the present application, however, the present application may be embodied in many different forms and is not limited to the embodiments described in the present application, which are not intended as additional limitations to the present application, but are provided for the purpose of providing a more thorough understanding of the present disclosure. Moreover, the above-mentioned technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope described in the present specification; further, modifications and variations may be suggested to those skilled in the art in light of the above teachings, and it is intended to cover all such modifications and variations as fall within the scope of the appended claims.

Claims (15)

1. A retraction device for retracting human tissue, comprising:

the expansion piece is provided with an expansion hole which is communicated along a preset direction, and the expansion piece is provided with a first end and a second end which are oppositely arranged along the preset direction; and

the guide piece is provided with an accommodating hole extending along the preset direction, the guide piece is inserted into the expansion hole, at least part of the guide piece extends out of the second end, and at least part of the guide piece extending out of the second end can be transparent.

2. The retraction device of claim 1, wherein the guide comprises:

the accommodating hole penetrates through the base body, and the base body is inserted into the expansion hole and partially extends out of the second end; and

the sheath guiding head is sleeved on the part of the substrate extending out of the second end, and at least part of the sheath guiding head can transmit light.

3. The retraction device according to claim 2,

the sheath guiding head is provided with a mounting hole which is communicated along the preset direction, the base body part is inserted in the mounting hole, and the mounting hole is communicated with the accommodating hole;

the guiding piece comprises a lens, and the lens is embedded in one side, far away from the base body, of the mounting hole.

4. The retraction device of claim 2, wherein the retraction device comprises a mounting unit including a body mounted to the first end, the base being mounted to the body.

5. The retracting device as claimed in claim 4, wherein the body comprises a cylindrical portion having a guide hole formed therethrough along a predetermined direction, the base is mounted to the cylindrical portion, and the guide hole is in communication with the receiving hole;

the mounting unit comprises a clamping piece, the column body portion is provided with a first side and a second side which are oppositely arranged along a preset direction, the clamping piece is embedded in the first side, and the clamping piece is provided with a clamping portion extending into the guide hole.

6. The retracting device of claim 5, wherein the base is threaded to the post portion.

7. The retraction device according to claim 5, wherein one of the grip member and the post portion is provided with a protrusion and the other is provided with a recess, the protrusion being received in the recess.

8. The retracting device of claim 5, wherein the mounting unit further comprises a fastener, the fastener is sleeved on the first side, and the fastener is adhered to the cylindrical portion.

9. The retraction device according to claim 5,

the main body comprises a mounting part formed by extending the column part outwards;

one side, far away from the column body part, of the mounting part extends along the preset direction and deviates from the first side to form a mounting wall, and the mounting wall extends towards the column body part to form a positioning block;

the mounting part deviates from the clamping part along the preset direction and extends to form a propping rib plate;

one side of the expansion piece, which is close to the first end, extends outwards to form a flange, and the flange is clamped and arranged between the positioning block and the abutting rib plate in the preset direction.

10. The retraction device according to claim 9,

one side of the flange, which is close to the second end, is provided with a positioning protrusion, one side of the positioning block, which is close to the first side, is provided with a positioning groove, and the positioning protrusion is clamped in the positioning groove.

11. The retraction device according to claim 9,

the flange is provided with a through groove, and the through groove is perpendicular to the preset direction and is matched with the positioning block.

12. The retraction device according to any of claims 1 to 11, wherein the expansion element is provided with a handle at the second end.

13. The retracting device of claim 12, wherein the profile of the expansion member decreases from the first end to the second end in a predetermined direction.

14. The retraction device according to claim 12, characterized in that the outside of the expansion element is provided with graduations arranged in a predetermined direction.

15. A medical device comprising a retraction device according to any of claims 1 to 14.

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