CN219397403U - Retracting device - Google Patents

Abstract

The embodiment of the application relates to the technical field of medical instruments, and particularly discloses a retracting device, which comprises: retracting the catheter and rotating the hub. Wherein, the retracting catheter is provided with a through operation channel which is provided with a near end hole and a far end hole; the rotating seat is arranged at the proximal end of the retracting catheter and is used for rotationally connecting with the endoscope limiting structure. In contrast to the prior art, the retractor device provided in the embodiment of the present application has the following beneficial effects: through locating the rotation seat of retracting the pipe, can reach the purpose of rotating connection scope limit structure, make in the operation in-process can keep fixed electronic camera equipment through scope limit structure, reduce the interference of operation in-process.

Description

Retracting device

Technical Field

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

Background

Ventricular hemorrhage is a common acute severe disorder of the nervous system. Among them, ventricular hemorrhage cast is a common type of ventricular hemorrhage, which is prone to cause acute severe hydrocephalus, has higher mortality, and requires emergency treatment for hematoma removal operation and dredging of cerebrospinal fluid circulation path. For brain surgery, especially deep-site surgery, where the surgical field is narrow and deep, the operator often needs the assistance of a retractor, which is a type of medical instrument that is brought into contact with the body tissue during surgery in order to obtain a surgical space and a surgical field. These retractors are introduced into the brain tissue during surgery and then pulled with force to separate or elevate the brain tissue to facilitate the surgical deployment.

However, the inventors of the present application, in carrying out the present application, found that: the endoscope is generally held by an assistant of an operator, the endoscope and surgical instruments enter the operation channel of the retractor together, and the endoscope is easy to shake due to the fact that the assistant of the operator holds the endoscope unstably, so that interference can be generated in the operation process of the operator, the safe operation is not facilitated, and the operation time is prolonged due to the fact that the assistant is required to finish the operation in addition.

Disclosure of Invention

Embodiments of the present application provide a retracting device to solve at least some of the problems of conventional retracting devices.

In order to solve the technical problems, one technical scheme adopted by the application is as follows: a retractor device for retracting human tissue, comprising: a retracting catheter provided with a through operation channel and having a proximal end hole and a distal end hole; the rotating seat is arranged at the proximal end of the retracting catheter and is used for rotationally connecting with the endoscope limiting structure.

In some embodiments, the swivel mount is provided with a first mount hole for mounting a swivel shaft.

In some embodiments, the endoscope comprises a retraction catheter, and the retraction catheter comprises a rotation seat, wherein the rotation seat is used for accommodating the retraction catheter.

In some embodiments, the retraction catheter includes a retraction body and a handle disposed at a proximal end of the retraction body; the rotating seat is convexly arranged on the surface of the handle, which is close to the proximal end hole.

In some embodiments, the rotation limiting structure is convexly arranged on the end surface of the rotation seat, which is separated from the handle; the rotation limiting structure is provided with a limiting end face.

In some embodiments, the surface of the handle is provided with a cleat. In some embodiments, the retraction body, the handle, the rotational seat, and the rotational stop feature are integrally formed.

In some embodiments, an outer surface of the retracting catheter facing away from the working channel is provided with a hydrophilic coating.

In some embodiments, the proximal end of the retracting catheter is provided with a matting coating.

In some embodiments, further comprising: a guide assembly comprising a mounting base and a guide tube; the guide pipe fitting is accommodated in the operation channel, the proximal end of the guide pipe fitting is fixedly assembled on the mounting base, and the distal end of the guide pipe fitting is conical; when the mounting base is assembled at the proximal end of the retracting catheter, the distal end of the guiding pipe fitting can extend out of the distal end hole of the retracting catheter for a preset length; the guide pipe fitting is provided with a guide channel which extends along the axial direction of the retracting guide pipe and can be inserted by an endoscope, the proximal end of the guide channel penetrates through the mounting base, and the distal end of the guide channel is sealed and has light transmittance.

In contrast to the prior art, the retractor device provided in the embodiment of the present application has the following beneficial effects: through locating the rotation seat of retracting the pipe, can reach the purpose of rotating connection scope limit structure, make in the operation in-process can keep fixed electronic camera equipment through scope limit structure, reduce the interference of operation in-process.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed 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 that other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.

Reference numerals illustrate:

FIG. 1 is a block diagram of a retractor apparatus provided in an embodiment of the present application;

FIG. 2 is a cross-sectional view of a retractor device provided in an embodiment of the present application;

FIG. 3 is a block diagram of a retracting catheter provided in an embodiment of the present application;

FIG. 4 is a side view of a retracting catheter provided in an embodiment of the present application;

FIG. 5 is a cross-sectional view taken at A-A in FIG. 4;

FIG. 6 is a block diagram of a guidance assembly provided by an embodiment of the present application;

FIG. 7 is a cross-sectional view of a guide assembly provided by an embodiment of the present application;

FIG. 8 is a block diagram of a mounting body provided by an embodiment of the present application, illustrating structural features of an outboard region;

FIG. 9 is a block diagram of a mounting body provided by an embodiment of the present application, illustrating structural features of an inboard region;

FIG. 10 is a block diagram of a locking member provided by an embodiment of the present application;

FIG. 11 is a block diagram of a lock body provided by an embodiment of the present application;

FIG. 12 shows the assembly of the locking member to the mounting body;

FIG. 13 illustrates the assembly of an endoscope retaining structure and an infusion tube;

fig. 14 is a structural diagram of an endoscope limiting structure provided in an embodiment of the present application;

FIG. 15 is a side view of an endoscope retaining structure provided in an embodiment of the present application;

fig. 16 is a structural view of a rotating shaft provided in an embodiment of the present application;

fig. 17 is a view of one of the use states of the retractor provided in the embodiments of the present application;

fig. 18 is another state of use of the retractor provided in embodiments of the present application.

Reference numerals illustrate:

1. a retractor device; x, a first direction; y. second direction; 10. retracting the catheter; 11. retracting the body; 111. an annular periphery; 112. alignment clamping grooves; D11. an operation channel; 11a, proximal end aperture; 11b, distal end aperture; 12. a handle; 121. a fixing part; 122. a connection part; 123. a hand-held part; 124. an engagement portion; 20. a guide assembly; 21. a mounting base; 211. a mounting body; D1. a first channel; 2111. a main body portion; z1. inner region; z2. outer region; 2111a, walls; 2111b, end plates; 2111c, aligning clamping plates; 2111d, a clearance notch; 2112. a column portion; 2113. a mounting part; 2113a, fitting notches; 2113b, sliding block; 2113c, a second positioning groove; 212. a fixing member; 2121. a clamping member; 2121a, positioning part; 2121b, clamping part; 2122. a fixing member; 2122a, holding the peripheral edge; 213. a locking member; 2131. a locking body; 2131a. A slider; 21311. a slide rail; 21312. a first positioning groove; 2131b, a holding portion; 21313. a positioning structure; 2131c, a clamping part; 21314. a hook; 2131d, a limiting part; 2132. an elastic element; 22. a guide tube; 221. a guide tube; D2. a second channel; 222. a sheath head; D3. a third channel; 223. a lens; 30. an endoscope limit structure; 31. a rotating assembly; 312. a connection body; D31. a liquid injection assembly channel; 3121. a first extension; 3122. a second extension; 3123. a third extension; 313. a first rotating seat; 314. a second rotating seat; 33. a rotating shaft; 341. the first limiting protrusion; 342. the second limiting bulge; 32. an endoscope limiting member; D32. a limiting channel; 40. a liquid injection pipe fitting; 41. a liquid injection conduit; D41. a liquid injection channel; 42. a liquid injection interface; 43. a flow stop clip; 2. an electronic image pickup apparatus.

Detailed Description

In order to facilitate an understanding of the present application, the present application will be described in more detail below with reference to the accompanying drawings and specific examples. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative 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 in this description is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 and 2, the retractor device 1 provided in the present application includes: the retracting catheter 10, the guide assembly 20, and the endoscope retaining structure 30.

The retracting catheter 10 is used for retracting human tissue, the retracting catheter 10 comprises a retracting body 11, the retracting body 11 has a preset length, the retracting body 11 is provided with a through operation channel D11 along the axial length direction, two ends in the length direction of the retracting body 11 are respectively provided with a proximal end hole 11a and a distal end hole 11b (shown in fig. 3) which are communicated with the operation channel D11, and the retracting body 11 has a waisted shape which continuously reduces in the direction from the proximal end to the distal end.

For convenience of description, the length direction of the retracting body 11 will be referred to as a first direction x, and correspondingly, one of the directions perpendicular to the length direction of the retracting body 11 will be referred to as a second direction y. In the medical industry, needle-like and tubular medical devices are generally referred to as a proximal end and a distal end, respectively, where the proximal end is the end closer to the operator and the distal end is the other end farther from the operator.

The guide assembly 20 is used to provide some of the tubular type electronic image pickup apparatuses 2 (shown in fig. 17, 18) such as endoscopes, ventriculoscopes, etc. with a guide channel D2 for the endoscope to enter the human body.

The guide assembly 20 includes a mounting base 21 and a guide tube 22, and the guide tube 22 is fitted to the mounting base 21. Wherein, the mounting base 21 is detachably assembled at the proximal end of the retracting body 11, so that the guiding tube 22 is accommodated in the operating channel D11, the proximal end of the guiding tube 22 is fixedly assembled at the mounting base 21, the guiding tube 22 is tapered at the distal end of the mounting base 21, and can extend out of the distal end hole 11b of the retracting body 11. The guide tube member 22 is provided with a guide passage D2 in the same direction as the first direction X into which the electronic image pickup apparatus 2 can be inserted. The proximal end of the guide channel D2 penetrates through the mounting base 21, and the distal end of the guide tube 22 is sealed at least partially transparent. When the mounting base 21 is assembled to the proximal end of the retracting catheter 10, the distal end of the guide tube 22 may extend out of the distal end hole of the retracting catheter 10 by a predetermined length.

The endoscope retaining structure 30 is rotatably fitted to the proximal end surface of the retracting catheter 10. The endoscope limiting structure 30 comprises a rotating component 31 and an endoscope limiting member 32, wherein a first end of the rotating component 31 is connected with the endoscope limiting member 32, and a second end of the rotating component 31 is rotatably connected with the proximal end face of the retracting catheter 10. The endoscope retainer 32 is rotatable from an initial position to a designated position within the proximal port of the retracting catheter 10 by rotation of the rotation assembly 31, and after rotation of the endoscope retainer 31 to the designated position, the endoscope is assembled and the endoscope is restricted from the designated position into the operating channel D11 of the retracting catheter 10. The initial position is a position outside the working channel D11 of the retracting catheter 10, and the designated position is a position inside the working channel D11 of the retracting catheter 10.

The electronic camera device 2 can be limited and kept at a designated position in the operation process through the endoscope limiting structure 30, so that the electronic camera device 2 can be prevented from interfering with other surgical instruments entering the operation channel D11, and interference to the operation process of the operation is prevented.

As shown in fig. 3, the retracting catheter 10 further includes a handle 12 for use as a hand-held or gripping location, the handle 12 being provided at the proximal end of the retracting body 11. In this embodiment, the handle 12 and the retracting body 11 may be integrally injection molded through an injection mold, and it may be understood that a mutually paired connection structure (such as a mortise and tenon structure, a threaded connection structure, etc.) may be respectively provided on the handle 12 and the retracting body 11, so as to be assembled and connected as a whole in a split manner.

As shown in fig. 4, the handle 12 may include a fixing portion 121, a connecting portion 122, and a holding portion 123 sequentially extending outward from the retracting body 11, and each of the fixing portion 121, the connecting portion 122, and the holding portion 123 may be a plate-shaped structure, wherein the fixing portion 121, the holding portion 123 extend along a second direction y (i.e., a radial direction of the retracting body 11), both ends of the connecting portion 122 are respectively connected to the fixing portion 121, the holding portion 12, and an angle between the connecting portion 122 and the fixing portion 121 and an angle between the connecting portion 122 and the holding portion 123 may be set to be an obtuse angle or a right angle so as to be in a plane perpendicular to the first direction x. The projection of the hand-held portion 123 and the projection of the retracting body 11 do not overlap, so that the operator can grasp the retracting catheter 10 well by the hand-held portion 123. It will be appreciated that in other embodiments of the present application, the handle 12 may be a straight bar disposed perpendicular to the first direction x, and the shape and structure of the handle 12 are not specifically limited, so long as the handle is convenient for an operator to hold.

As shown in fig. 5, the cross section of the retraction body 11 perpendicular to the first direction x is an elliptical ring comprising an inner ellipse representing the inner side of the retraction body 11, an outer ellipse representing the outer side of the retraction body 11, and a wall of the retraction body 11 between the inner ellipse and the outer ellipse. The inner ellipse and the outer ellipse of the elliptical ring are continuously reduced from the proximal end of the retractor body 11 in the direction from the first direction x toward the distal end, so that the retractor body 11 has a continuously reduced waisted profile in the first direction x. By designing the retractor body 11 to have a waisted shape, not only can the stoma previously opened to the patient be better expanded to form a surgical passage, but also the adjustability of the surgical instrument in the operation passage D11 can be improved. It will be appreciated that in some embodiments, the cross-section of the retractor body 11 may also be configured as a ring, polygon ring, etc., as may the purpose of dilating the stoma to form a surgical passageway and adjusting the surgical instrument.

In some embodiments, to facilitate understanding and control of the length of the distal end of the retraction body 11 extending into the human body during the surgical operation, and ensure safe and reliable operation, the outer side of the retraction body 11 may be marked with a scale (not shown in the drawings) of a preset range, and the specific scale range may be set reasonably according to practical situations. In some embodiments, the proximal end of the retracting catheter 10 may be provided with a matting coating, specifically, the end surface of the proximal end of the retracting body 11 and the upper surface of the fixing portion 121 of the handle 12 may be coated with a matting coating, where the matting coating may avoid the situation that the coated area of the retracting catheter 10 reflects light under the irradiation of lamplight, so as to ensure the safety of the surgical operation, and the upper surface of the fixing portion 121 refers to the surface of the handle 12 facing away from the distal end of the retracting body 11. In some embodiments, to prevent slippage on the surface of the retracting catheter 10 when an operator grips or uses the robotic arm to grip the handle 12, the surface of the grip 123 may be provided with anti-slip grooves that may increase the friction between the skin or the robotic arm and the handle 12, reducing slippage. In some embodiments, the outer surface of the retracting catheter 10 facing away from the operation channel D11 is provided with a hydrophilic coating, i.e. the outer side of the retracting body 11 may be coated with a hydrophilic coating, so that the retracting body 11 may reach the lesion of the patient more smoothly.

As shown in fig. 6 and 7, the guide assembly 20 includes a mounting base 21 and a guide tube 22. Wherein, the mounting base 21 is provided with a first channel D1 penetrating therethrough, the proximal end of the guiding tube 22 is fixedly assembled in the first channel D1 of the mounting base 21, the guiding tube 22 is provided with a second channel D2 extending along the first direction x and used as a guiding channel, and the second channel D2 is communicated with the first channel D1. In actual assembly, the mounting base 21 is detachably mounted on the proximal end of the retracting catheter 10, such that the guide tube 22 is received in the operation channel D11, and the distal end of the guide tube 22 extends out of the distal end hole 11b of the retracting catheter 10 (see fig. 1 and 2).

Further, the mounting base 21 may include a mounting body 211, a fixing member 212, and a locking member 213. The fixing member 212 and the locking member 213 are detachably fitted to the mounting body 211, wherein the fixing member 212 is for fixing the electronic image pickup apparatus 2, and the locking member 213 is for locking the mounting body 211 to the proximal end of the retracting catheter 10.

Specifically, as shown in fig. 8 and 9, the mounting body 211 may include a main body portion 2111, a column portion 2112, and a mounting portion 2113. The main body portion 2111 may be a cover-like member formed by enclosing the peripheral wall 2111a and the end plate 2111b, at least one alignment clamping plate 2111c is protruding from the inner side of the peripheral wall 2111a of the main body portion 2111, correspondingly, an annular periphery 111 is provided at the proximal end of the retracting body 11, an alignment clamping groove 112 (as shown in fig. 3) adapted to the alignment clamping plate 2111c is provided on the annular periphery 111, the alignment clamping plate 2111c of the main body portion 2111 and the alignment clamping groove 112 of the retracting body 11 are adapted to each other, and the mounting base 21 may be positioned and assembled on the retracting catheter 10. The cylindrical portion 2112 is protruding in the first direction x and disposed on the main body portion 2111, in this embodiment, a part of the cylindrical portion 2112 is protruding on an inner area Z1 surrounded by a surrounding wall 2111a of the main body portion 2111, and another part of the cylindrical portion 2112 is protruding on an outer area Z2 of the main body portion 2111, which is away from the inner area Z1, and the first channel D1 is penetrating along the first direction x of the cylindrical portion 2112 (i.e. the axial direction of the cylindrical portion 2112). The mounting portion 2113 is formed by extending outward from the peripheral wall 2111a of the main body portion 2111 in the second direction y, and a clearance notch 2111d for avoiding the handle fixing portion 121 is formed at both a connection portion between the mounting portion 2113 and the main body portion 2111 and at a distal end portion of the mounting portion 2113 away from the main body portion 2111, and at the time of actual assembly, the mounting body 211 is engaged with a proximal end port of the retractor body 11 by the main body portion 2111 and with the fixing portion 121 of the handle 12 by the mounting portion 2113.

Referring to fig. 7, the fixing member 212 includes a clamping member 2121 and a fixing member 2122, and both the clamping member 2121 and the fixing member 2122 are fixedly fitted to the column portion 2112 of the mounting body 211. The clamping member 2121 may be made of a material with better flexibility, such as rubber, silica gel, or plastic, and the fixing member 2122 is assembled to the column portion 2112, so that the clamping member 2121 is clamped and fixed between the column portion 2112 and the fixing member 2122.

Specifically, clip 2121 can include a positioning portion 2121a and a clip 2121b. The positioning portion 2121a is configured as a hollow cylindrical structure that can adapt to the shape of the column portion 2112, in some embodiments, the positioning portion 2121a may be provided with a ring groove, correspondingly, a step boss is disposed at a portion of the column portion 2112 for matching with the positioning portion 2121a, and the ring groove and the step boss are mutually adapted, so that the clamping member 2121 can be assembled to the column portion 2112 in a positioning manner. The clamping portion 2121b may be a clamping flange or a plurality of clamping arms protruding from an inner side surface of the positioning portion 2121a, where the clamping flange is provided with a through hole, or the plurality of clamping arms enclose to form the through hole, the through hole is communicated with the first channel D1, and a radial dimension of the through hole is smaller than an outer diameter dimension of a tube body of the electronic image capturing apparatus 2. When the clamping member 2121 is assembled to the column portion 2112, the clamping member 2121 is sleeved to the column portion 2112 by the positioning portion 2121a thereof, and meanwhile, the clamping portion 2121b of the clamping member 2121 is accommodated in the first channel D1, and when the electronic image capturing apparatus 2 passes through the through hole of the clamping portion 2121b, the clamping portion 2121b can be elastically deformed, and thereby, the clamping portion 2121b generates elastic force to clamp the electronic image capturing apparatus 2.

The fixture 2122 may be configured as a hollow-interior cylindrical column with two open ends coaxial with the clamp 2121 and/or the column portion 2112, and one open end of the fixture 2122 is provided with a holding peripheral edge 2122a surrounding the inner side edge. In some embodiments, the fixing element 2122 may also be provided with a ring groove, and accordingly, a step boss may be provided at a portion of the cylinder portion 2112 for matching with the fixing element 2122, and the ring groove and the step boss are matched with each other, so that the fixing element 2122 may be assembled to the cylinder portion 2112 in a positioning manner. As one example, before the fixing element 2122 is assembled to the body, an adhesive may be applied to the inner side of the fixing element 2122, then the fixing element 2122 is sleeved on the cylinder 2112 with its one end that does not abut against the peripheral edge 2122a, then the abutting peripheral edge 2122a abuts against the clamping portion 2121b that is sleeved on the cylinder 2112 in advance, and finally the ring groove of the fixing element 2122 and the stepped boss of the cylinder 2112 are matched with each other, so that the fixing element 2122 is assembled in place on the mounting body 211, and the clamping element 2121 is firmly assembled to the cylinder 2112.

As shown in fig. 10, the locking member 213 includes a locking body 2131 and an elastic element 2132. The lock body 2131 is attached to the mounting body 211, and the mounting body 211 and the retracting catheter 10 are engaged with each other by the deformation elastic force generated by the elastic member 2132.

Specifically, as shown in fig. 11, the lock body 2131 includes a slide body 2131a, a holding portion 2131b, a locking portion 2131c, and a stopper portion 2131d. The sliding body 2131a has a predetermined length, two sides along the length direction of the sliding body protrude from the sliding rail 21311, and a first positioning groove 21312 for accommodating the elastic element 2132 is formed between the two sliding rails 21311. The supporting portion 2131b is disposed at one end of the sliding body 2131a, seals the notch of the first positioning groove 21312, and is provided with a positioning structure 21313 capable of positioning the elastic element 2132, and the positioning structure 21313 may be a notch or a protrusion. The engagement portion 2131c is provided at the other end of the sliding body 2131a, is positioned on a surface facing away from the first positioning groove 21312, and the engagement portion 2131c includes a hook 21314 extending parallel to the longitudinal direction of the sliding body 2131a and toward the abutting portion 2131b. The limiting portion 2131d is disposed at an end of the sliding rail 21311 near the engaging portion 2131c, and may be a boss with a limiting end surface protruding on the surface of the sliding rail 21311 for limiting the sliding stroke of the locking body 2131. The elastic element 2132 may be a cylindrical spring, and the cylindrical spring is partially received in the first positioning groove 21312 (as shown in fig. 10), and is received in a recess or is sleeved on a boss near the end of the abutting portion 2131b.

Referring to fig. 9, corresponding to the structure of the locking member 213, the mounting portion 2113 may be provided with an accommodating space surrounded by the surrounding wall 2111a and the end plate 2111b, and an assembling slot 2113a penetrating the surrounding wall 2111a and communicating with the accommodating space, the accommodating space being provided therein with a slider 2113b and a second positioning groove 2113c, the slider 2113b being provided protruding from an inner side surface of the surrounding wall 2111a, the second positioning groove 2113c being provided recessed from an inner side surface of the end plate 2111b and communicating with the assembling slot 2113a. As shown in fig. 3, the fixing portion 121 of the handle 12 is provided with an engaging portion 124 near the proximal end of the retracting body 11, and the engaging portion 124 may be a slot adapted to the hook 21314.

As shown in fig. 12, the first positioning groove 21312 of the locking body 2131 is assembled with the second positioning groove 2113c of the mounting body 211 in an opposing manner, specifically: the locking body 2131 is pushed into the accommodating space with one end provided with the clamping portion 2131c through the assembling notch 2113a, the sliding rail 21311 of the locking body 2131 and the sliding block 2113b of the accommodating space form a sliding pair, meanwhile, the overlapping area of the first positioning groove 21312 and the second positioning groove 2113c is enclosed into an accommodating groove for accommodating the elastic element 2132, the elastic element 2132 is accommodated in the accommodating groove and respectively abuts with the end faces of the accommodating groove with the two ends, the locking body 2131 can elastically deform the elastic element 2132 under the pushing of external force, and then an elastic restoring force is generated, the elastic restoring force facilitates the locking body 2131 to slide out towards the assembling notch 2113a, and when the mounting base 21 is assembled on the retracting catheter 10, the elastic restoring force can enable the mounting base 21 to ensure that the clamping portion 2131c of the locking body 2131 and the clamping portion 124 of the retracting catheter 10 are in a clamped state under normal conditions.

When the mounting base 21 is assembled to the retracting catheter 10, the operator presses the abutting portion 2131b of the locking body 2131 to push the locking body 2131 to slide into the accommodating space, so that the elastic element 2132 is compressed, then the alignment clamping plate 2111c of the mounting body 211 is aligned and assembled to the alignment clamping groove 112 of the retracting catheter 10, and then the abutting portion 2131b of the locking body 2131 is released, so that the locking body 2131 moves in the direction of the engaging portion 124 under the elastic restoring force of the elastic element 2132, and the engaging portion 2131c extends into the engaging portion 124 to realize locking, so that the mounting base 21 can be fixed to the retracting catheter 10. When the mounting base 21 is removed from the retracting catheter 10, the operator pushes the holding portion 2131b of the lock body 2131 to push the lock body 2131 to slide into the accommodating space, thereby compressing the elastic element 2132, and releasing the engaging portion 2131c from the engaging portion 124 to unlock the mounting base 21, so that the mounting base 21 can be removed from the retracting catheter 10. The locking body 2131 may abut against the peripheral wall 2111a of the mounting portion 2113 during pushing the abutting portion 2131b, and the limiting portion 2131d may abut against the sliding block 2113b during releasing the abutting portion 2131b, so as to limit the sliding stroke of the locking body 2131 and prevent the locking body 2131 from falling off.

Further, referring to fig. 7, the guiding tube 22 may include a guiding tube 221, a guiding sheath head 222 and a lens 223. Wherein, the proximal end of the guiding tube 221 is fixedly assembled in the first channel D1 of the mounting base 21, the lens 223 is fixedly assembled in the distal end of the guiding tube 221, and the guiding sheath head 222 is sleeved and fixed on the distal end of the guiding tube 221 assembled with the lens 223.

The guide tube 221 is open at both ends and hollow at the inside, forming a second channel D2 (i.e., a guide channel) extending in the length direction thereof. The proximal end of the guide tube 221 may be fixed to the first channel D1 of the mounting base 21 by bonding, and the second channel D2 communicates with the first channel D1. The sheath head 222 has a through passage formed along an axial direction thereof, which is referred to as a third passage D3 for convenience of description, and an adhesive may be applied to the third passage D3, and the sheath head 222 may be socket-fastened to a distal end of the guide tube 221 through the third passage D3. The sheath head 222 further has a sheath head proximal end and a sheath head distal end disposed opposite to each other, the sheath head proximal end being set to a waisted shape compatible with the distal end of the operation channel D11, the sheath head distal end being set to a tapered shape. The lens 223 is transparent and has a cylindrical shape matched with the second channel D2 and the third channel D3, one part of the lens 223 can be fixed at the distal opening of the second channel D2 by bonding or screwing to block the second channel D2, and the other part can be exposed at the distal opening of the sheath head through the third channel D3, meanwhile, the exposed part of the lens 223 is set to be a spherical surface smoothly transiting with the outer surface of the distal end of the sheath head, so as to reduce the stimulation to human tissues. In the embodiment of the present application, the guide tube 221 and/or the sheath head 222 may be made of metal and/or plastic.

By arranging the light-permeable lens 223 at the distal end of the guide pipe fitting, the condition that the imaging quality is reduced due to pollution of the extending end (namely the distal end) of the electronic image pickup device caused by direct contact between the electronic image pickup device and human tissues can be avoided, meanwhile, the lens 223 is blocked at the distal end of the guide channel, so that the electronic image pickup device can be well protected, and the electronic image pickup device is prevented from being damaged due to direct contact with the human tissues in the process of retracting the human tissues along with the retracting guide pipe 10.

As shown in fig. 13 and 14, the endoscope retaining structure 30 includes a rotation assembly 31 and an endoscope retaining member 32. The first end of the rotating component 31 is connected with the endoscope limiting piece 32, and the second end of the rotating component 31 is rotationally connected with the proximal end face of the retracting catheter 10; the endoscope limiting member 32 can rotate from an initial position to a designated position in the proximal port of the retracting catheter 10 by the rotation of the rotating member 31; when the endoscope stopper 32 is rotated to a specified position, an endoscope (electronic image pickup apparatus 2) can be assembled and an operation passage of the endoscope from the specified position into the retracting catheter 10 can be defined.

The rotating assembly 31 includes a connecting body 312, the endoscope limiting member 32 is disposed at a first end of the connecting body 312, and a second end of the connecting body 312, which is separated from the endoscope limiting member 32, is rotatably connected to a proximal end surface of the retracting catheter 10 (as shown in fig. 1).

As shown in fig. 15, the connection body 312 may include a first extension portion 3121, a second extension portion 3122, and a third extension portion 3123, the second extension portion 3122 being connected between the first extension portion 3121 and the third extension portion 3123. Specifically, one end of the second extension portion 3122 is connected to one end of the first extension portion 3123, and the other end is connected to one end of the third extension portion 3123; the end of the first extension 3121, which is separated from the second extension 3122, serves as a first end of the connection body 312, and is connected to the endoscope limiter 32.

The scope stopper 32 may be provided with one, two, or even a plurality thereof, having an axial direction parallel to the first direction x, and provided with a stopper passage D32 that restricts the electronic image pickup apparatus 2 in the axial direction. In this embodiment of the application, the scope locating part 32 is spacing pipe, has seted up spacing passageway D32 along its axial, and spacing passageway is used for supplying the scope to penetrate, makes the scope can shoot focus position.

In some embodiments, the rotating assembly 31 further includes first and second rotating members disposed at the second end of the connecting body 312, the first and second rotating members being adapted for rotational assembly. The first rotating member may be a rotating seat, and the second rotating member may be a rotating shaft 33 (see fig. 16).

Specifically, the number of the rotating seats is two, for convenience of description, one of the rotating seats is called a first rotating seat, the other rotating seat is called a second rotating seat, the first rotating seat is provided with a first seat hole for assembling the rotating shaft, and the second rotating seat is provided with a second seat hole for assembling the rotating shaft. Wherein, the first rotating seat 313 (as shown in fig. 15) is disposed at the second end of the connecting body 312; a second rotary mount 314 (fig. 3) is provided at the proximal end of the retracting catheter 10 for rotationally coupling with the endoscope retaining structure 30. More specifically, the end of the third extension portion 3123, which is separated from the second extension portion 3122, serves as a second end of the connection body 312, and is connected to the first rotation seat 313; the second rotating seat 314 is protruded on a surface of the handle 12 near the proximal end hole 11a, for example, the second rotating seat 314 is protruded on the fixing portion 121 of the handle 12 of the retracting catheter 10. In some embodiments, the endoscope retainer 32, the connecting body 312, and the first rotation seat 313 may be integrally injection molded by an injection mold.

In some embodiments, the endoscope retaining member 32, the first rotating seat 313, and the second extending portion 3122 may each have a length direction or an axial direction that is in the same direction as the first direction x, and the first extending portion 3121 and the third extending portion 3123 may each have a length direction or an axial direction that is in the same direction as the second direction y. That is, the endoscope retaining member 32, the first extending portion 3121, the second extending portion 3122, the third extending portion 3123, and the first rotating seat 313 are connected at four right angles so that the rotating assembly 31 can avoid interference of collision with the handle 12, scraping, etc. during rotation, and of course, the rotating assembly 31 is not limited to the above-mentioned shape, and the rotating assembly 31 can be provided in other suitable shapes.

The rotating shaft 33 has a first assembling end and a second assembling end opposite to each other, the first assembling end is assembled to the first rotating seat 313 in a non-rotating manner, the second assembling end is assembled to the second rotating seat 314 in a rotatable manner, or the first assembling end is assembled to the first rotating seat 313 in a rotatable manner, and the second assembling end is assembled to the second rotating seat 314 in a non-rotatable manner, so that a rotating connection is formed between the rotating assembly 31 and the retracting catheter 10.

In some embodiments, the rotating assembly 31 further includes a rotation limiting structure disposed on the rotating seat for limiting a relative rotation angle of the rotating assembly 31 relative to the retracting catheter 10, so that the rotating assembly 31 and the endoscope limiting member 32 can rotate to a specified position, and limiting is performed when the endoscope limiting member 32 rotates to the specified position. Specifically, the rotation limiting structure may have two rotation limiting structures, and for convenience of description, one of the rotation limiting structures is referred to as a first limiting protrusion 341, and the other rotation limiting structure is referred to as a second limiting protrusion 341. The first limiting protrusion 341 is protruding on an end surface of the first rotating seat 313 (as shown in fig. 14) opposite to the handle 12; the second limiting protrusion 341 is protruding on an end surface of the second rotating seat 314 (fig. 3) that is opposite to the connecting body 312. The rotation limiting structure (the first limiting protrusion 341 and the second limiting protrusion 341) is provided with a limiting end surface, and when the rotating assembly 31 rotates to a designated position relative to the retracting catheter 10, the first limiting protrusion 341 and the second limiting protrusion 342 are abutted with the limiting end surface so as to limit the relative rotation. In this embodiment, the retracting body 11, the handle 12, the first rotating base 313, and the first limiting protrusion 341 are integrally formed.

The position of the first limiting protrusion 341 on the end surface of the first rotating seat 313 and/or the position of the second limiting protrusion 342 on the end surface of the second rotating seat 314 can be distributed according to the actually required rotating angle, so that when the first limiting protrusion 341 and the second limiting protrusion 342 are mutually abutted, the rotating assembly 31 just rotates to the designated position relative to the retracting catheter 10, and the purpose of limiting the endoscope limiting structure 30 to continue rotating is achieved.

In this embodiment, the rotation angle may be 180 °. Of course, the rotation angle may be set to any other suitable angle as long as it is possible to ensure that the scope stopper 32 is out of the range of the operation path D11 by rotating the rotation assembly 31 in a state where the electronic image pickup apparatus is not required to be used, or that the scope stopper 32 is in the range of the operation path D11 by rotating the rotation assembly 31 in a state where the electronic image pickup apparatus is required to be used.

As shown in fig. 13, the retractor device further comprises a filling tube 40, and the filling tube 40 comprises a filling conduit 41. As shown in fig. 14, the side end of the rotating component 31 is further provided with a fluid injection assembly channel D31 for assembling a fluid injection pipe 40 to inject fluid into the operation channel of the retracting catheter 10. The connection body 312 is provided with a liquid injection fitting channel D31 extending along the first extending portion 3121, the second extending portion 3122, and the third extending portion 3123 in order, and the liquid injection conduit 41 is fitted to the connection body 312 through the liquid injection fitting channel D31.

In this embodiment, the infusion catheter 41 may be a flexible tube, provided with an infusion channel D41 for cleaning a lesion site, and having an external shape adapted to the infusion assembly channel D31.

When the rotating assembly 31 is in the use state of clamping and fixing the electronic camera apparatus 2, the liquid outlet of the liquid injection catheter 41 is located in the projection range of the operation channel D11, so that the liquid injection catheter 41 can inject the liquid medicine to the focus part through the operation channel D11 for performing the intra-operative irrigation.

Specifically, the infusion conduit 331 may include a first portion 411, a second portion 412, and a third portion 413, where the first portion 411 and the third portion 413 are located on opposite sides of the infusion conduit 41, and the second portion 412 connects the first portion 411 and the third portion 413.

The liquid inlet of the liquid injection conduit 41 is arranged at the third part 413, the liquid outlet is arranged at the first part 411, and the first part 411 and the endoscope limiting part 32 can be orthogonal, so that the part of the liquid injection channel D41 close to the liquid outlet is perpendicular to the limiting channel D32. Of course, other suitable angles may be formed between the first portion 411 and the endoscope retaining member 32.

In some embodiments, the filler tube 40 further includes a filler neck 42 and a stopper clamp 43. One end of the infusion catheter 41 is connected to the infusion port 42, and the other end extends to the proximal end port of the retracting catheter 10 after passing through the infusion assembly channel D31. A stop clip 43 is fitted between the ends of the filler pipe 41 for regulating the flow of liquid through the filler pipe 41.

Through scope limit structure, can be in operation in-process, make the operation passageway of retracting the pipe hold surgical instruments, electronic camera equipment simultaneously, ensure surgical instruments, electronic camera equipment not mutually interfere in the use when operation in-process is visual, moreover, can also wash focus position through annotating the liquid pipe fitting.

In order to better understand the implementation manner of the retracting device provided in the embodiments of the present application, the application uses a cerebral hematoma or cerebral hemorrhage removal as an example, and the following schematic description is given to the using process of the retracting device. The procedure sequence involved in the following use process can be adjusted and changed without affecting the operation effect.

The operation preparation stage comprises the following steps:

s11, an operator fixedly assembles the guide assembly on the retracting catheter;

s12, as shown in fig. 17, the operator passes the electronic image pickup apparatus 2 (which may be an endoscope or a ventriculoscope) from the first channel of the mounting base, along the guide channel, to reach above the lens.

Step S11 may further include the steps of:

s111, extending the distal end of the guide pipe fitting into the operation channel, and simultaneously pressing the abutting part of the locking body;

s112, clamping the clamping plate of the mounting base with the clamping groove of the retracting catheter, and clamping the clamping part of the mounting base with the clamping part of the retracting catheter;

s113, ensuring that the waisted outer wall of the proximal end of the guide sheath head and the contracted inner wall of the retraction body are matched and positioned, and exposing the distal end of the guide sheath head to the distal end port of the retraction catheter;

s114, loosening the abutting part, so as to finish the assembly and fixation of the guide assembly on the retracting catheter.

The surgical stage comprises the following steps:

s21, placing a retractor device with electronic camera equipment into the cranium of a patient through a fistulization opening which is arranged in advance on the patient, and finding a focus position through an image displayed by the electronic camera equipment;

s22, clamping a handle to fix the retracting catheter, sequentially taking the electronic camera device and the guide assembly out of the retracting catheter, and leaving the retracting catheter in the patient;

s23, as shown in FIG. 18, rotating the endoscope limiting structure until the limiting channel is positioned in the range of the operation channel, and then penetrating the electronic image pickup device through the limiting channel to be reloaded into the operation channel;

s24, the device filled with the flushing liquid medicine is screwed with the liquid injection interface, and in the subsequent operation process, the focus part is cleaned according to the operation requirement.

Advantageous aspects of the retractor device provided herein are:

on one hand, the electronic camera equipment is clamped and fixed through the guide assembly and the endoscope limiting structure, so that the whole operation process can be visualized, the focus position can be accurately found, blind wearing and blind extraction are avoided, the safety and reliability of operation are improved, and the damage to a patient is reduced;

in addition, after the focus part is determined, the guide component can be removed, the traction guide tube is reserved to be an operation channel for a surgical instrument to enter a patient body, the electronic camera device is clamped and fixed through the limiting channel, the focus part is cleaned by injecting liquid medicine through the liquid injection channel, the processes of the entering of the surgical instrument, the shooting of the electronic camera device and the injection of the liquid medicine are not interfered with each other, the potential iatrogenic injury can be reduced in the aspect of the patient, and the safe progress of the surgical operation can be facilitated in the aspect of an operator.

It should be noted that the description and drawings of the present application show preferred embodiments of the present application, but the present application may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, which are not to be construed as additional limitations on the content of the present application, but are provided for the purpose of providing a more thorough understanding of the present disclosure. The above-described features are further combined with each other to form various embodiments not listed above, and are considered to be the scope described in the present specification; further, modifications and variations of the present utility model may occur to those skilled in the art in light of the foregoing teachings, and all such modifications and variations are intended to be within the scope of the appended claims.

Claims (10)

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

a retracting catheter provided with a through operation channel and having a proximal end hole and a distal end hole;

the rotating seat is arranged at the proximal end of the retracting catheter and is used for rotationally connecting with the endoscope limiting structure.

2. The retractor device of claim 1, wherein said swivel mount is provided with a first mount aperture for mounting a swivel shaft.

3. The retractor device of claim 1, further comprising a rotational limit structure disposed on said rotational mount for limiting a relative rotational angle of said endoscope limit structure with respect to said retractor catheter.

4. The retractor device of claim 3, wherein said retractor catheter comprises a retractor body and a handle, said handle being provided at a proximal end of said retractor body;

the rotating seat is convexly arranged on the surface of the handle, which is close to the proximal end hole.

5. The retractor device of claim 4, wherein said rotational limit structure is protruding from an end surface of said rotational base opposite said handle; the rotation limiting structure is provided with a limiting end face.

6. The retractor device of claim 4, wherein a surface of said handle is provided with a cleat.

7. The retractor of claim 5, wherein said retractor body, said handle, said rotational mount, and said rotational limit feature are integrally formed.

8. The retractor device of claim 1, wherein an outer surface of said retractor catheter facing away from said working channel is provided with a hydrophilic coating.

9. The retractor device of claim 1, wherein a proximal end of said retractor catheter is provided with a matting coating.

10. The retractor device of claim 1, further comprising: a guide assembly comprising a mounting base and a guide tube;

the guide pipe fitting is accommodated in the operation channel, the proximal end of the guide pipe fitting is fixedly assembled on the mounting base, and the distal end of the guide pipe fitting is conical; when the mounting base is assembled at the proximal end of the retracting catheter, the distal end of the guiding pipe fitting can extend out of the distal end hole of the retracting catheter for a preset length;

the guide pipe fitting is provided with a guide channel which extends along the axial direction of the retracting guide pipe and can be inserted by an endoscope, the proximal end of the guide channel penetrates through the mounting base, and the distal end of the guide channel is sealed and has light transmittance.