CN117122356A - Soft tissue expanding device - Google Patents
Soft tissue expanding device Download PDFInfo
- Publication number
- CN117122356A CN117122356A CN202311066912.4A CN202311066912A CN117122356A CN 117122356 A CN117122356 A CN 117122356A CN 202311066912 A CN202311066912 A CN 202311066912A CN 117122356 A CN117122356 A CN 117122356A
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- Prior art keywords
- tube
- gland
- soft tissue
- outer tube
- fixing
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- 210000004872 soft tissue Anatomy 0.000 title claims abstract description 52
- 210000004907 gland Anatomy 0.000 claims abstract description 52
- 230000010339 dilation Effects 0.000 claims description 15
- 238000000034 method Methods 0.000 description 14
- 238000007917 intracranial administration Methods 0.000 description 6
- 210000001175 cerebrospinal fluid Anatomy 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 208000032843 Hemorrhage Diseases 0.000 description 4
- 230000000740 bleeding effect Effects 0.000 description 4
- 210000001519 tissue Anatomy 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 208000007536 Thrombosis Diseases 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 2
- 201000009941 intracranial hypertension Diseases 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 206010008111 Cerebral haemorrhage Diseases 0.000 description 1
- 206010018852 Haematoma Diseases 0.000 description 1
- 206010020772 Hypertension Diseases 0.000 description 1
- 230000023555 blood coagulation Effects 0.000 description 1
- 210000003710 cerebral cortex Anatomy 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000024200 hematopoietic and lymphoid system neoplasm Diseases 0.000 description 1
- 230000008506 pathogenesis Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
Abstract
The invention discloses a soft tissue expanding device, which relates to the technical field of medical equipment and comprises an outer tube, an inner tube, a fixing assembly and a pressing assembly, wherein the bottom end of the inner tube protrudes from the bottom end of the outer tube and forms a smooth cambered surface with the bottom end of the outer tube; the fixing assembly comprises a fixing tube and a first elastic piece, the fixing tube is sleeved in the outer tube, the first elastic piece is arranged in the fixing tube, the bottom end of the fixing tube is provided with a plurality of elastic pieces along the circumference of the tube, and the tail ends of the elastic pieces are bent towards the direction of the central axis; the pressing component comprises a central tube, a gland and a handle; the gland is pressed on the top end of the inner pipe, and a clamping piece is arranged on the gland; the central tube passes through the middle parts of the gland and the first elastic piece and stretches into the elastic pieces, and a step which is abutted with the top end of the first elastic piece is arranged on the central tube; the handle is arranged at the top end of the central tube, and a through hole is arranged on the handle. The device is convenient to disassemble and assemble; the head incision of the patient is less damaged; the endoscope pipeline can be fixed in position in the device and can smoothly run without clamping stagnation.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a soft tissue expansion device.
Background
When a patient suffering from neurosurgery hypertension cerebral hemorrhage needs an operation in the pathogenesis, the position of the bleeding point, the operation position, the size of a cerebral cortex incision, the hematoma part and other factors can not be directly detected by using the shadowless lamp. This results in the surgeon not being able to directly observe the surgical site, greatly increasing the difficulty and risk of the surgical procedure.
In the current operation process, as the minimally invasive incision at the operation site is too small, in order to more intuitively and accurately observe the position of a bleeding point and the position and shape of a blood tumor, the elasticity of soft tissues is needed to be utilized, a soft tissue expander is firstly used for extending into the minimally invasive incision and expanding, and then an endoscope is slowly inserted into the head of a patient from the inside of the soft tissue expander to search for a focus part. In the process that the soft tissue expander stretches into the minimally invasive incision, the probe of the endoscope is fixed at the tail end of the soft tissue expander, and the minimally invasive incision and the internal condition of the head of a patient are observed in a time-aided mode. Therefore, the function of the soft tissue expander ensures the smoothness of the endoscope during running, does not generate clamping stagnation, and ensures the stability of the endoscope at a fixed position and does not generate sliding. This also places high demands on the structure of the soft tissue expander.
Disclosure of Invention
The invention provides a soft tissue expanding device, which is provided with a fixing component and a pressing component with special structures to be matched in a cooperative manner, so that an endoscope can be smoother when in advancing and can be firmer when in a fixed position. Specifically, the method is realized by the following technology.
The soft tissue expanding device is characterized by comprising an outer tube, an inner tube, a fixing assembly and a pressing assembly, wherein the inner tube is sleeved in the outer tube, the bottom end of the inner tube protrudes from the bottom end of the outer tube and forms a smooth cambered surface with the bottom end of the outer tube, the top end of the outer tube is provided with a clamping piece, and the clamping piece is provided with a clamping hole;
the fixing assembly comprises a fixing tube and a first elastic piece, the fixing tube is sleeved in the outer tube through a first step, the first elastic piece is arranged in the fixing tube through a second step, a plurality of elastic pieces are arranged at the bottom end of the fixing tube along the circumference of the tube, and the tail ends of the elastic pieces are bent towards the direction of a central axis;
the pressing assembly comprises a central tube, a gland and a handle; the gland is pressed on the top end of the inner tube, and the gland is provided with a clamping piece which is clamped with the clamping hole; the central tube sequentially passes through the middle parts of the gland and the first elastic piece and stretches into the elastic pieces, a third step is arranged on the central tube, and the third step is abutted with the top end of the first elastic piece; the handle is arranged at the top end of the central tube, and a through hole coaxial with the central tube is arranged on the handle.
The method for assembling the soft tissue expansion device provided by the invention comprises the following steps: fitting a first elastic member (e.g., a spiral second elastic member) into the fixed tube such that an end of the first elastic member abuts against the second step; the fixed pipe is assembled in the inner pipe, and the fixed pipe and the inner pipe are limited through a first step structure; sleeving the inner tube in the outer tube; penetrating the central tube into the fixed tube from the middle of the first elastic piece, wherein the bottom end of the central tube does not extend out of the elastic piece end at the bottom end of the fixed tube and does not need to be in contact with the elastic piece, and at the moment, the third step of the central tube is abutted against the top end of the first elastic piece; finally, pressing the gland onto the top end of the inner tube, clamping the clamping piece into the clamping hole, enabling the top end of the central tube to penetrate through the gland, and assembling the upper handle; the outer tube, the inner tube, the fixing piece and the pressing component of the whole soft tissue expansion device are all assembled together, and can be used for subsequent operations.
In general, the soft tissue expansion device provided by the invention generally adopts a certain degree of interference fit mode to combine two parts, and the two parts are not separated if no larger external force is applied after the combination. The inner tube of the soft tissue expansion device and the fixed tube do not need to be tightly sleeved, and the top ends of the gland and the inner tube do not need to be tightly sleeved; of course, these parts can also be tightly sleeved by interference fit or the like. The clamping piece and the clamping hole are used for fixing the gland. After fixation, the entire soft tissue dilation device can be more secure.
Alternatively, the inner part of the outer tube and the inner tube may be provided in a form having a slightly thicker top end than bottom end, so that the inner tube can be sleeved at a predetermined position by utilizing the limit function of the inclined inner wall of the outer tube. Preferably, in order to further precisely control the depth of the inner tube inserted into the outer tube, the inner tube is sleeved inside the outer tube through a step.
If necessary, the endoscope can be extracted and replaced by a blood coagulation block which stretches into other equipment to suck bleeding, so that the subsequent operation is finished;
it should be noted that, because the plurality of elastic pieces are opened and closed in the process of up-and-down movement of the central tube, the opening and closing amplitude of each elastic piece is the same, the deformation generated is the same, and the clamping force of the central tube or the endoscope tube is the same. Therefore, the endoscope pipeline can be firmly fixed when the endoscope pipeline needs to be fixed, and the running clamping stagnation can not be generated when the endoscope pipeline needs to run.
When the above process is actually performed, if the operation space in the central tube is limited, the endoscope can be taken out first to enlarge the operation space under the necessary condition, the clip is operated to be separated from the clip, and then a series of parts such as the gland, the central tube, the fixed tube, the first elastic element and the inner tube are all taken away; only 1 outer tube is left to prop up the incision of the head of the patient, and then the endoscope is extended into the outer tube and into the head of the patient for operation.
It should be noted that the bottom ends of the outer tube and the inner tube need to be inserted into the part in the head of the patient, and the insertion depth of the outer tube and the inner tube can be controlled according to the actual situation. The smooth cambered surface that the bottom of outer tube and inner tube constitutes, its purpose is in the incision in patient's head in-process of stretching into, avoids the sharp part of the bottom of outer tube and inner tube to hurt each tissue such as brain of patient's head, makes the process of stretching into smoother. If the bottom ends of the outer tube and the inner tube are uneven, soft tissues near the minimally invasive incision are easily scratched. The whole outer tube and the inner tube do not need to be tightly sleeved, and the inner tube can be easily drawn out from the outer tube.
Preferably, the fastener comprises a fastener and a second elastic member, the fastener being located inside the gland; the pressing end of the buckle extends out of the side face of the gland; one end of the second elastic piece is abutted with the inside of the gland, and the other end of the second elastic piece is abutted with the buckle; the clamping hook end of the clamping buckle extends out of the bottom of the gland. The clamping hook end of the clamping buckle is used for being clamped and fixed with the clamping hole, and the pressing end of the clamping buckle is used for enabling the clamping hook end to be separated from the clamping hole. The finger presses the pressing end of the buckle along the horizontal direction from the side surface, so that the clamping hook end of the buckle can be driven to be connected with the clamping part Kong Songtuo, and the whole gland can be separated from the clamping part of the outer tube, so that the whole soft tissue expansion device is disassembled and assembled. The second elastic piece is used for resetting the buckle.
More preferably, the buckle and the second elastic piece are both provided with 2, the inside of gland is equipped with the board of keeping out, and 2 buckles set up for keeping out the board symmetry, and 2 second elastic pieces set up for keeping out the board symmetry, the one end of second elastic piece with keep out the board butt, the other end with the buckle butt. In order to facilitate operation and make the clamping firm, 2 buckles are used for clamping the clamping holes.
Alternatively, the function and purpose of the first elastic member and the second elastic member are to return the center tube and the buckle, so that the structure satisfying the above function falls within the category of the first elastic member and the second elastic member of the present invention, such as a spring.
Preferably, the third step also abuts an inner surface of the gland. After the third step is abutted with the inner surface of the gland, the up-and-down movement of the central tube can play a limiting role. If so arranged, the assembly sequence of the whole soft tissue expansion device is changed, the central tube is assembled firstly, then the gland is installed, and finally the handle is installed after the top of the central tube passes through the gland.
Preferably, the inner tube is formed by splicing a first tube and a second tube up and down. The inner tube is spliced by the first tube and the second tube, so that the inner tube is convenient to assemble and disassemble. In addition, the outer tube and the second tube can be made of transparent materials (such as transparent plastics), so that the working states of the fixed tube, the central tube and the endoscope in the soft tissue expansion device can be conveniently observed.
More preferably, the first tube and the second tube are spliced by a fourth step.
Further preferably, the first pipe is provided with a first limit protrusion/first limit groove at the splicing part of the fourth step, and the second pipe is correspondingly provided with a first limit groove/first limit protrusion at the splicing part of the fourth step.
Preferably, the top end of the fixed pipe is provided with a second limit protrusion/a second limit groove, and the bottom end of the gland is correspondingly provided with a second limit groove/a second limit protrusion with matched shapes. The limiting piece and the limiting groove are used for preventing the fixed pipe from rotating along the center shaft, so that the positioning in the circumferential direction is realized.
Preferably, the outer wall of the outer tube is provided with graduations. The graduations are used to determine the depth of the device extending into the incision in the patient's head.
Preferably, the bottom end of the inner tube is provided with a pressure reducing hole. In order to more conveniently overflow the cerebrospinal fluid and other liquids, a pressure reducing hole can be additionally arranged at the bottom end of the inner tube.
It is also noted that the interior of the patient's head causes elevated intracranial pressure in the normally liquid cerebrospinal fluid or blood clot. Therefore, after the soft tissue expansion device is stretched into the head of a patient, if the situation of excessive intracranial pressure exists, liquid such as cerebrospinal fluid and the like can overflow to the top end of the device along a plurality of internal gaps (for example, between an outer tube and an inner tube and between a fixed tube and a central tube) of the soft tissue expansion device, so that the problem of excessive intracranial pressure of the patient can be relieved by reducing the increase of the intracranial pressure caused by stretching the soft tissue expansion device into the head. Thus, the present device in principle does not need to be provided with any special relief holes or relief channels.
Optionally, the inner tube and the outer tube are transparent structures.
Optionally, anti-slip structures (e.g., cleats) may also be provided on the handle and clip to facilitate pressing and assembly.
Compared with the prior art, the invention has the following advantages: according to the invention, the whole device is more convenient to assemble and disassemble by the fixing component and the pressing component which are specially designed; less damage to the patient's head incision; the endoscope pipe can freely move in the device, not only can fix the position, but also can smoothly move, and no clamping stagnation is generated.
Drawings
FIG. 1 is a schematic illustration of the external configuration of a soft tissue dilation device provided in an embodiment;
FIG. 2 is a cross-sectional view of the internal structure of a soft tissue dilation device provided in an embodiment;
FIG. 3 is a cross-sectional view of the internal structure of the soft tissue dilation device after the handle is depressed and extended into the endoscope;
FIG. 4 is a right side cross-sectional view of the internal structure of the clip, gland of the soft tissue dilation device;
FIG. 5 is a cross-sectional view of the internal structure of a preferred clip, clasp, gland;
FIG. 6 is a schematic view of a partial perspective view of a preferred clip, clasp, gland;
FIG. 7 is a cross-sectional view of the internal structure of the tissue expansion device of the preferred third step configuration;
FIG. 8 is a schematic perspective view of an inner tube of a preferred construction;
FIG. 9 is a schematic perspective view of a preferred embodiment of a stationary tube and gland;
FIG. 10 is a schematic view of the outer and inner tube structures of the preferred structure;
in the figure: 1. an outer tube; 2. an inner tube; 3. a clamping piece; 4. a clamping hole; 5. a fixed tube; 6. a first elastic member; 7. a first step; 8. a second step; 9. a spring plate; 10. a central tube; 11. a gland; 12. a handle; 13. a clip; 14. a third step; 15. a through hole; 16. a buckle; 17. a second elastic member; 18. a retaining plate; 19. a first tube; 20. a second tube; 21. a fourth step; 22. the first limiting protrusion; 23. a first limit groove; 24. the second limiting bulge; 25. the second limit groove; 26. a scale; 27. and a pressure reducing hole.
Detailed Description
The following description of the embodiments of the present patent will be made clearly and completely with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present patent, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the one of ordinary skill in the art based on the embodiments of this patent, are within the scope of protection of this patent.
In the description of this patent, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description of this patent and for simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the patent. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. It is noted that all of the figures are exemplary representations. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art in a specific context.
The present patent is described in further detail below by way of specific examples of embodiments and with reference to the accompanying drawings. .
Examples
As shown in fig. 1 and 2, the soft tissue expanding device is characterized by comprising an outer tube 1, an inner tube 2, a fixing assembly and a pressing assembly, wherein the inner tube 2 is sleeved in the outer tube 1, the bottom end of the inner tube 2 protrudes from the bottom end of the outer tube 1 and forms a smooth cambered surface with the bottom end of the outer tube 1, the top end of the outer tube 1 is provided with a clamping piece 3, and the clamping piece 3 is provided with a clamping hole 4;
as shown in fig. 2, the fixing assembly comprises a fixing tube 5 and a first elastic piece 6, the fixing tube 5 is sleeved in the outer tube 1 through a first step 7, the first elastic piece 6 is arranged in the fixing tube 5 through a second step 8, a plurality of elastic pieces 9 are arranged at the bottom end of the fixing tube 5 along the circumference of the tube, and the bottom ends of the elastic pieces 9 are bent towards the middle axis direction;
as shown in fig. 2, the pressing assembly includes a central tube 10, a pressing cover 11, and a handle 12; the pressing cover 11 is pressed on the top end of the inner tube 2, and the pressing cover 11 is provided with a clamping piece 13 which is clamped with the clamping hole 4; the central tube 10 sequentially passes through the middle parts of the pressing cover 11 and the first elastic piece 6 and stretches into the elastic pieces 9, a third step 14 is arranged on the central tube 10, and the third step 14 is abutted with the top end of the first elastic piece 6; the handle 12 is arranged at the top end of the central tube 10, and a through hole 15 coaxial with the central tube 10 is arranged on the handle 12.
The invention provides a soft tissue expansion device, which comprises the following assembly and use methods:
(1) Fitting a first elastic member (e.g., a spiral spring) into the fixed tube such that an end of the first elastic member abuts against the second step; the fixed pipe is assembled in the inner pipe, and the fixed pipe and the inner pipe are limited through a first step structure; sleeving the inner tube in the outer tube; penetrating the central tube into the fixed tube from the middle of the first elastic piece, wherein the bottom end of the central tube does not extend out of the elastic piece end at the bottom end of the fixed tube and does not need to be in contact with the elastic piece, and at the moment, the third step of the central tube is abutted against the top end of the first elastic piece; finally, pressing the gland onto the top end of the inner tube, clamping the clamping piece into the clamping hole, enabling the top end of the central tube to penetrate through the gland, and assembling the upper handle; the outer tube, the inner tube, the fixing piece and the pressing component of the whole soft tissue expansion device are all assembled together and can be used;
(2) As shown in fig. 3, in use, the handle is pressed to move the central tube downwards and spread the small openings formed by the elastic sheets until the bottom end of the central tube extends out from the bottom end of the elastic sheet; then the endoscope stretches into the central tube, stretches out from the bottom end of the central tube, continues to stretch downwards in the inner tube until reaching the vicinity of the bottom end of the inner tube or being flush with the bottom end of the inner tube, and then releases the handle, and the handle and the central tube move upwards to an initial position under the action of the first elastic piece; the elastic sheet is restored to the initial state at the moment and clamps the endoscope tube; thereby fixing the position of the endoscope tube;
(3) After head tissue is incised, the outer tube and the inner tube are held by hands to extend into the incision, and the endoscope also observes the conditions inside the head of a patient at any time in the extending process, so that the emergency can be dealt with at any time, and the depth of the soft tissue expanding device extending into the head can be judged conveniently;
(4) When the soft tissue expansion device is inserted to a preset depth, the handle is pressed downwards again, the central tube moves downwards again at the moment and supports the elastic sheet, the endoscope is not clamped by the elastic sheet at the moment, and the endoscope can extend out of the bottom end of the inner tube and then extend into the deeper part of the head of a patient for exploration;
in general, the inner tube and the fixed tube do not need to be tightly sleeved, and the top ends of the gland and the inner tube do not need to be tightly sleeved; of course, these parts can also be tightly sleeved by interference fit or the like. The clamping piece and the clamping hole are used for fixing the gland. After fixation, the entire soft tissue dilation device can be more secure. If necessary, the endoscope can be extracted, and the endoscope can be inserted into other devices to suck the bleeding coagulation blocks, so that the subsequent operation is completed;
it should be noted that, because the plurality of elastic pieces are opened and closed in the process of up-and-down movement of the central tube, the opening and closing amplitude of each elastic piece is the same, the deformation generated is the same, and the clamping force of the central tube or the endoscope tube is the same. Therefore, the endoscope pipeline can be firmly fixed when the endoscope pipeline needs to be fixed, and the running clamping stagnation can not be generated when the endoscope pipeline needs to run.
When the above process is actually performed, if the operation space in the central tube is limited, the endoscope can be taken out first to enlarge the operation space under the necessary condition, the clip is operated to be separated from the clip, and then a series of parts such as the gland, the central tube, the fixed tube, the first elastic element and the inner tube are all taken away; only 1 outer tube is left to prop up the incision of the head of the patient, and then the endoscope is extended into the outer tube and into the head of the patient for operation.
It should be noted that the bottom ends of the outer tube and the inner tube need to be inserted into the part in the head of the patient, and the insertion depth of the outer tube and the inner tube can be controlled according to the actual situation. The smooth cambered surface that the bottom of outer tube and inner tube constitutes, its purpose is in the incision in patient's head in-process of stretching into, avoids the sharp part of the bottom of outer tube and inner tube to hurt each tissue such as brain of patient's head, makes the process of stretching into smoother. If the bottom ends of the outer tube and the inner tube are uneven, soft tissues near the minimally invasive incision are easily scratched. The whole outer tube and the inner tube do not need to be tightly sleeved, and the inner tube can be easily drawn out from the outer tube.
It is also noted that the interior of the patient's head causes elevated intracranial pressure in the normally liquid cerebrospinal fluid or blood clot. Therefore, after the soft tissue expansion device is stretched into the head of a patient, if the situation of excessive intracranial pressure exists, liquid such as cerebrospinal fluid and the like can overflow to the top end of the device along a plurality of internal gaps (for example, between an outer tube and an inner tube and between a fixed tube and a central tube) of the soft tissue expansion device, so that the problem of excessive intracranial pressure of the patient can be relieved by reducing the increase of the intracranial pressure caused by stretching the soft tissue expansion device into the head. Thus, the present device in principle does not need to be provided with any special relief holes or relief channels.
As shown in fig. 4, as a preferable structure, the snap member 13 includes a snap 16 and a second elastic member 17 (e.g., a spring), and the snap 16 is located inside the pressing cover 11; the pressing end of the buckle 16 extends out from the side face of the gland 11; one end of the second elastic member 17 abuts against the inside of the gland 11, and the other end abuts against the buckle 16; the clamping hook end of the clamping buckle 16 extends out from the bottom of the pressing cover 11.
When the soft tissue expansion device is used, the pressing end of the buckle is pressed by a finger from the side surface along the horizontal direction, so that the clamping hook end of the buckle is separated from the clamping hole, and the gland can be separated from the clamping piece of the outer tube, so that the gland is removed, and further, other parts of the soft tissue expansion device are removed. The second elastic piece is used for resetting the buckle.
As shown in fig. 5 and 6, in order to remove the gland more conveniently, 2 buckles 16 and second elastic members 17 are provided, a retaining plate 18 is provided in the gland 11, 2 buckles 16 are symmetrically disposed with respect to the retaining plate 18, and 2 second elastic members 17 are symmetrically disposed with respect to the retaining plate 18; one end of the second elastic member 17 abuts against the abutment plate 18, and the other end abuts against the buckle 16.
As shown in fig. 7, the third step 14 also abuts against the inner surface of the pressing cover 11. According to the arrangement mode, when the soft tissue expansion device is assembled, the central tube is assembled in the fixed tube, then the gland is installed, and finally the handle is installed after the top of the central tube passes through the gland.
As shown in fig. 8, the inner tube 2 is formed by tightly splicing a first tube 19 and a second tube 20 up and down, the first tube 19 and the second tube 20 are tightly spliced by a fourth step 21, the first tube 19 is provided with a first limiting protrusion 22 at the splicing position of the fourth step 21, and the second tube 20 is correspondingly provided with a first limiting groove 23 at the splicing position of the fourth step 21.
Alternatively, the inner part of the outer tube and the inner tube may be provided in a form having a slightly thicker top end than bottom end, so that the inner tube can be sleeved at a predetermined position by utilizing the limit function of the inclined inner wall of the outer tube. Preferably, in order to further precisely control the depth of insertion of the inner tube into the outer tube, the inner tube is sleeved inside the outer tube by additionally providing a step (as shown in fig. 1-8).
As shown in fig. 9, the top end of the fixed tube 5 is provided with a second limiting protrusion 24, and the bottom end of the pressing cover 11 is correspondingly provided with a second limiting groove 25 with a matched shape.
As shown in fig. 10, the outer wall of the outer tube 1 is provided with graduations 26; the bottom end of the inner tube 2 is provided with a pressure reducing hole 27.
Optionally, the inner tube and the outer tube are transparent structures.
Optionally, anti-slip structures (e.g., cleats) may also be provided on the handle and clip to facilitate pressing and assembly.
The above detailed description describes in detail the practice of the invention, but the invention is not limited to the specific details of the above embodiments. Many simple modifications and variations of the technical solution of the present invention are possible within the scope of the claims and technical idea of the present invention, which simple modifications are all within the scope of the present invention.
Claims (10)
1. The soft tissue expanding device is characterized by comprising an outer tube, an inner tube, a fixing assembly and a pressing assembly, wherein the inner tube is sleeved in the outer tube, the bottom end of the inner tube protrudes from the bottom end of the outer tube and forms a smooth cambered surface with the bottom end of the outer tube, the top end of the outer tube is provided with a clamping piece, and the clamping piece is provided with a clamping hole;
the fixing assembly comprises a fixing tube and a first elastic piece, the fixing tube is sleeved in the outer tube through a first step, the first elastic piece is arranged in the fixing tube through a second step, a plurality of elastic pieces are arranged at the bottom end of the fixing tube along the circumference of the tube, and the tail ends of the elastic pieces are bent towards the direction of a central axis;
the pressing assembly comprises a central tube, a gland and a handle; the gland is detachably arranged at the top end of the inner tube, and is provided with a clamping piece which is clamped with the clamping hole; the central tube sequentially passes through the middle parts of the gland and the first elastic piece and stretches into the elastic pieces, a third step is arranged on the central tube, and the third step is abutted with the top end of the first elastic piece; the handle is arranged at the top end of the central tube, and a through hole coaxial with the central tube is arranged on the handle.
2. The soft tissue dilation device according to claim 1 wherein the clasp comprises a clasp and a second resilient member, the clasp being located inside the gland; the pressing end of the buckle extends out of the surface of the gland; one end of the second elastic piece is abutted with the inside of the gland, and the other end of the second elastic piece is abutted with the buckle; the clamping hook end of the clamping buckle extends out of the bottom of the gland.
3. The soft tissue dilation device according to claim 2 wherein a retaining plate is provided inside the gland, the buckle and the second elastic member are provided with 2 and are symmetrically arranged relative to the retaining plate, one end of the second elastic member is abutted against the retaining plate, and the other end is abutted against the buckle.
4. The soft tissue dilation device according to claim 1 wherein the third step further abuts an inner surface of the gland.
5. The soft tissue dilation device according to claim 1 wherein the inner tube is comprised of a first tube and a second tube spliced one above the other.
6. The soft tissue dilation device according to claim 5 wherein the first tube and the second tube are spliced by a fourth step.
7. The soft tissue dilation device according to claim 6 wherein the first tube is provided with a first stop tab/first stop slot at the splice location of the fourth step and the second tube is correspondingly provided with a first stop slot/first stop tab at the splice location of the fourth step.
8. The soft tissue dilation device according to claim 1 wherein the top end of the fixation tube is provided with a second limit protrusion/second limit groove and the bottom end of the gland is correspondingly provided with a shape-matched second limit groove/second limit protrusion.
9. The soft tissue dilation device according to claim 1 wherein the outer wall of the outer tube is provided with graduations in a vertical direction.
10. The soft tissue dilation device according to claim 1 wherein the bottom end of the inner tube is provided with a pressure relief vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311066912.4A CN117122356B (en) | 2023-08-23 | 2023-08-23 | Soft tissue expanding device |
Applications Claiming Priority (1)
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| US20060030872A1 (en) * | 2004-08-03 | 2006-02-09 | Brad Culbert | Dilation introducer for orthopedic surgery |
| CN101156974A (en) * | 2007-11-20 | 2008-04-09 | 马立勋 | A Silk-guiding lead-in device |
| WO2013065509A1 (en) * | 2011-11-02 | 2013-05-10 | 株式会社トップ | Instrument insertion tool for use with endoscope |
| CN108523944A (en) * | 2018-04-28 | 2018-09-14 | 中国人民解放军第七五医院 | A kind of digestive endoscope is closed folder and its application method |
| CN211796913U (en) * | 2019-12-31 | 2020-10-30 | 徐见亮 | Protector of medical endoscope matched with puncture outfit sleeve for use |
| CN216777126U (en) * | 2021-12-24 | 2022-06-21 | 陈尚军 | Tissue expander for minimally invasive surgery |
| CN218978839U (en) * | 2022-09-28 | 2023-05-09 | 苏州火象医疗技术有限公司 | Endoscopic self-checking instrument with outer protective sleeve |
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2023
- 2023-08-23 CN CN202311066912.4A patent/CN117122356B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060030872A1 (en) * | 2004-08-03 | 2006-02-09 | Brad Culbert | Dilation introducer for orthopedic surgery |
| CN101156974A (en) * | 2007-11-20 | 2008-04-09 | 马立勋 | A Silk-guiding lead-in device |
| WO2013065509A1 (en) * | 2011-11-02 | 2013-05-10 | 株式会社トップ | Instrument insertion tool for use with endoscope |
| CN108523944A (en) * | 2018-04-28 | 2018-09-14 | 中国人民解放军第七五医院 | A kind of digestive endoscope is closed folder and its application method |
| CN211796913U (en) * | 2019-12-31 | 2020-10-30 | 徐见亮 | Protector of medical endoscope matched with puncture outfit sleeve for use |
| CN216777126U (en) * | 2021-12-24 | 2022-06-21 | 陈尚军 | Tissue expander for minimally invasive surgery |
| CN218978839U (en) * | 2022-09-28 | 2023-05-09 | 苏州火象医疗技术有限公司 | Endoscopic self-checking instrument with outer protective sleeve |
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| CN117122356B (en) | 2024-04-09 |
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