CN112656489A - Variable-diameter puncture device - Google Patents
Variable-diameter puncture device Download PDFInfo
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- CN112656489A CN112656489A CN202011562030.3A CN202011562030A CN112656489A CN 112656489 A CN112656489 A CN 112656489A CN 202011562030 A CN202011562030 A CN 202011562030A CN 112656489 A CN112656489 A CN 112656489A
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Abstract
The invention discloses a variable-diameter puncture device which is characterized by comprising a channel assembly, a gas injection assembly and a variable-diameter assembly, wherein the variable-diameter assembly comprises a variable-diameter ring, a mounting seat, a self-locking structure and a guide structure, the variable-diameter ring is arranged in a spiral structure and is made of flexible materials, a sliding groove and a sliding block are arranged on the variable-diameter ring, the sliding groove is arranged in a spiral structure along the length direction of the variable-diameter ring, and an overlapped part of the variable-diameter ring can form a fit sealing surface in the sliding and variable-diameter process. The invention realizes the sealing of the reducing ring in the sliding and reducing process by arranging the sliding groove on the upper surface of the snail-shaped reducing ring and arranging the sliding block on the lower surface, solves the problem of air leakage caused by size matching when the puncture outfit is used for operating instruments with different specifications, meets the double requirements of adjusting the inner diameter size of the puncture sleeve and maintaining the sealing property, and has the advantages of more portability, labor saving and easy adjustment compared with the traditional dial-type inner diameter converter by adopting the sliding mode.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a puncture device with a variable diameter.
Background
A puncture instrument is a surgical instrument used in minimally invasive surgery, especially hard-barreled surgery, for establishing an artificial passage into a body cavity. Typically consisting of a cannula assembly and a needle. The general clinical use mode is as follows: a small opening is cut in the patient's skin, and the needle is inserted through the cannula assembly, and then passed through the abdominal wall through the skin opening into the body cavity. Once inside the body cavity, the needle is removed, leaving the cannula assembly as a passage for the instrument into and out of the body cavity. At present, the open operation is gradually changed into the minimally invasive operation in the cavity in the operations related to the abdominal cavity in the gynecology department, the general surgery department and the like, so that the puncture outfit is more widely and importantly applied.
In laparoscopic surgery, 2-5 holes are generally adopted, one is used for placing a laparoscope and is generally positioned on a navel of the lower abdomen, and the other holes are used for placing surgical instruments. The laparoscopic surgery instruments are 5mm, 10mm, 12mm and the like in outer diameter, and need to be matched with puncture cannulas with corresponding inner diameters to avoid pneumoperitoneum air leakage and influence on normal operation. However, in clinical practice, surgical instruments of various specifications are generally required for one puncture site and are used alternately during the operation, but the fixed puncture cannula is inconvenient to replace. Taking a 10mm puncture cannula as an example, when a surgical instrument with the specification of 10mm is used, the inner diameter of the cannula is matched with the surgical instrument, and the risk of air leakage is avoided; when a 5mm gauge surgical instrument is used, the cannula does not match the surgical instrument, creating an air leak.
Therefore, the use of different surgical instruments on one puncture cannula without air leakage is an urgent engineering problem to be solved. The common solution is that the internal diameter converter that integrates is additionally installed to the last installation of puncture sleeve pipe, adopts the plectrum to stir the conversion, but, extra installation uses the loaded down with trivial details nature that the converter can increase the operation, and the problem also appears easily in the cooperation of converter itself and puncture ware moreover, increases the operation risk.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a puncture device with variable diameters, which can overcome the defect that the puncture cannula with a given inner diameter size leaks gas when using surgical instruments with different specifications.
In order to achieve the purpose, the invention provides the following technical scheme: a puncture device with a variable diameter comprises a sleeve part and a puncture part, wherein the sleeve part comprises a channel assembly for placing the puncture part or other surgical instruments, an air injection assembly for injecting external air and a variable diameter assembly for adapting to the surgical instruments with different sizes, the channel assembly comprises an inner end arranged in an abdominal cavity and an outer end exposed outside, the outer end comprises a main cavity matched with the surgical instruments, the inner end comprises a pipe body communicated with the main cavity, a one-way sealing valve is arranged at the communication position of the main cavity and the pipe body, and the air injection assembly is communicated with the pipe body;
the reducing assembly is arranged in the main cavity and positioned above the one-way sealing valve, the reducing assembly comprises a reducing ring for changing the inner diameter of the main cavity, a mounting seat for fixedly connecting the reducing ring, a self-locking structure for fixing the inner diameter of the reducing ring and a guide structure for driving the reducing ring to change the inner diameter, the reducing ring is arranged in a volute structure and made of flexible materials, the upper surface of the reducing ring is provided with a sliding groove, the lower surface of the reducing ring is provided with a sliding block matched with the sliding groove, the sliding groove is arranged in a spiral structure along the length direction of the reducing ring, in the sliding process of the sliding block in the sliding groove, the overlapped part of the reducing ring can form a fitting sealing surface, the width of the fitting sealing surface is reduced along with the reduction of the inner diameter of the reducing ring, the width of the fitting sealing surface is enlarged along with the enlargement of the inner diameter of the reducing ring, one end of the reducing ring is fixedly, the other end slides on the sliding groove in a reciprocating way.
Further, it is connected with the rotation cover that is used for driving the reducing ring end of sliding to remove to rotate on the main cavity room, be provided with on the main cavity room and supply to rotate the rotation draw-in groove that the cover rotates the connection, it is equipped with the protruding edge that is used for rotating the connection with rotation draw-in groove screw thread to rotate the upper ring, it is used for adjusting protruding edge and rotates the rotation screw thread of the degree of depth of screwing in rotating the draw-in groove to rotate to be provided with on the draw-in groove, the guide structure is sheathe in rotating including setting up and is used for sliding the pull wire of end connection with the reducing ring, the one end fixed connection of pull wire is sheathe in rotating, and other end fixed connection slides the end at the reducing ring, it can slide along the spout through the pull wire.
Furthermore, the self-locking structure comprises a plurality of locking buckles connected to the outer side wall of the main cavity in a sliding mode and used for limiting the rotation of the rotating sleeve, and clamping holes arranged on the rotating sleeve and used for clamping the locking buckles, wherein the clamping holes are formed in the rotating sleeve in the circumferential direction of the outer side wall of the rotating sleeve, and the sliding direction of the locking buckles is the axial direction of the main cavity;
the self-locking structure also comprises a sliding locking piece arranged on the sliding end of the reducing ring and used for limiting sliding, a sliding hole arranged on the sliding end of the reducing ring and used for the sliding locking piece to slide and rotate and be connected, and a movable cavity arranged on the upper surface of the reducing ring and used for accommodating the sliding locking piece, the sliding locking piece is arranged in a [ -shaped structure and comprises a vertical part which is connected with the sliding hole in a sliding and rotating way, a disengagement limiting part arranged at the top of the vertical part and a locking part arranged at the bottom end of the vertical part and used for being abutted against the movable cavity, the slide hole is connected with a groove for accommodating the locking part, the movable cavity is arranged in an L-shaped structure, the movable cavity is provided with an opening for inserting the locking part, after the locking part is inserted into the movable cavity, the locking part can be limited in the movable cavity through rotation, so that the sliding of the sliding end of the reducing ring is limited.
Further, activity cavity bottom is provided with bar magnet, the locking piece that slides is made by conductive magnet, can inhale or repel each other through changing electric current and bar magnet magnetism, limit off portion and locking portion parallel arrangement, it is used for driving limit off portion and rotates to the spring perpendicular with reducing ring length direction to be connected with between limit off piece and the reducing ring.
Further, the activity cavity is provided with a plurality ofly, is provided with the sensor that is used for discerning the locking piece that slides in every activity cavity, be provided with the display screen that is coupled with the sensor on the rotation cover, the sensor discerns that the locking piece that slides falls into corresponding activity cavity after, with signal transmission to display screen, the display screen shows the reducing ring internal diameter size that this activity cavity corresponds.
Further, the slider is provided with a plurality of, the slider becomes the setting of "T" shape structure, including the spacing portion that prevents that the slider from droing in the spout and be used for the connecting portion of being connected with reducing ring lower surface, the height dimension of connecting portion and the degree of depth size looks adaptation of spout.
Furthermore, the slider becomes the setting of banded structure, the cross-section of slider becomes the setting of "T" shape structure, including the spacing portion that prevents that the slider from droing in the spout and be used for the connecting portion of being connected with reducing ring lower surface, the height dimension of connecting portion and the degree of depth size looks adaptation of spout.
Further, the bottom of the tube body is provided with an air bag for preventing air leakage at the puncture position.
Further, a thread structure for preventing the sleeve part from moving at the puncture position is arranged on the tube body.
In conclusion, the invention has the following beneficial effects: the upper surface through the reducing ring at the snail sets up the spout, the lower surface sets up the slider, has realized that the reducing ring is sealed at the reducing in-process, because the size matches the problem that causes gas leakage when having solved the surgical instruments of the practical different specifications of puncture ware, has satisfied the dual requirement to puncture sleeve pipe internal diameter size adjustment and keep the leakproofness to adopt the mode of sliding, compare in traditional group piece formula internal diameter converter and have the advantage of more portable laborsaving and easy adjustment.
Drawings
FIG. 1 is a schematic view of a split structure of a puncturing device;
FIG. 2 is a cross-sectional view (radial) of the primary chamber;
FIG. 3 is an enlarged view of area A of FIG. 2;
FIG. 4 is a cross-sectional view (axial) of the primary chamber;
FIG. 5 is a schematic structural diagram of the reducing ring.
Reference numerals: 1. a sleeve member; 11. a main chamber; 111. locking the buckle; 12. a pipe body; 121. a thread structure; 13. a gas injection assembly; 14. a reducing ring; 141. a chute; 142. a slider; 143. a sliding lock; 144. a slide hole; 145. a groove; 146. a movable cavity; 147. a strip magnet; 148. a spring; 15. rotating the sleeve; 151. a pull wire; 152. a clamping hole; 16. a mounting seat; 17. a sealing film; 18. an air bag; 2. a puncturing member.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Referring to fig. 1-5, a variable-diameter puncture device comprises a cannula part 1 and a puncture part 2, wherein the cannula part 1 comprises a channel assembly for placing the puncture part 2 or other surgical instruments, an air injection assembly 13 for injecting external air, and a variable-diameter assembly for adapting to the surgical instruments with different sizes, the channel assembly comprises an inner end arranged in an abdominal cavity and an outer end exposed outside, the outer end comprises a main cavity 11 matched with the surgical instruments, the inner end comprises a tube body 12 communicated with the main cavity 11, a one-way sealing valve is arranged at the communication position of the main cavity 11 and the tube body 12, and the air injection assembly 13 is communicated with the tube body 12;
in the hard tube laparoscopic surgery, especially in the laparoscopic surgery, a pneumoperitoneum machine is usually used to continuously inject gas (such as carbon dioxide gas) into the abdominal cavity of a patient and maintain a stable gas pressure (about 13-15 mmHg) so as to obtain a sufficient surgical operation space. The one-way sealing valve may be of a known product and functions to provide an unobstructed insertion of the instrument and to automatically close and form a seal when the instrument is removed.
The reducing component is arranged in the main chamber 11 and positioned above the one-way sealing valve, the reducing component comprises a reducing ring 14 for changing the inner diameter size of the main chamber 11, a mounting seat 16 for fixedly connecting the reducing ring 14, a self-locking structure for fixing the inner diameter size of the reducing ring 14 and a guide structure for driving the reducing ring 14 to change the inner diameter size, the reducing ring 14 is arranged in a volute structure and is made of flexible materials, a sliding groove 141 is arranged on the upper surface of the reducing ring 14, a sliding block 142 matched with the sliding groove 141 is arranged on the lower surface of the reducing ring 14, the sliding groove 141 is arranged in a spiral structure along the length direction of the reducing ring 14, in the sliding process of the sliding block 142 in the sliding groove 141, an overlapping part of the reducing ring 14 can form a joint sealing surface, the width size of the joint sealing surface is reduced along with the reduction of the inner diameter size of the reducing ring 14, and is enlarged along with the expansion of, one end of the reducing ring 14 is fixedly connected to the mounting base 16, and the other end thereof slides back and forth on the sliding groove 141.
The sliding blocks 142 and the sliding grooves 141 arranged on the reducing ring 14 realize that the reducing ring 14 slides inwards or outwards along the circumferential direction, and the size of the inner diameter of the main chamber 11 is changed in a sliding mode, so that the reducing ring is smoother and labor-saving; in addition, in the process of changing the inner diameter size of the reducing ring 14, the upper surface and the lower surface of the reducing ring are always kept in a fit state, the sealing state between the reducing ring 14 and the mounting seat 16 and between the overlapped parts of the reducing ring 14 can be ensured on the basis of reducing, and the risk of air leakage of the puncture outfit in the laparoscopic surgery can be reduced.
The sliding groove 141 is arranged in a spiral structure along the length direction of the reducing ring 14, so that when the sliding block 142 slides in the sliding groove 141, the sliding end of the reducing ring 14 can be continuously close to the center of the main chamber 11, and the inner diameter of the reducing ring 14 can be continuously reduced. And reducing ring 14 becomes the setting of snail column structure, and its reducing in-process can form the circular through-hole that supplies surgical instruments to pass through in the central point of reducing ring 14, and circular through-hole more laminates with surgical instruments's lateral wall, and the in-process leakproofness at the operation is better. The mounting seat 16 may be a convex edge disposed around the inner cavity 11, and the mounting seat 16 and the reducing ring 14 may be in abutting contact for sealing, or a sliding groove 141 may be disposed on the mounting seat 16 for enhancing the sealing performance between the mounting seat 16 and the reducing ring 14.
In summary, the sliding groove 141 is arranged on the upper surface of the snail-shaped reducing ring 14, the sliding block 142 is arranged on the lower surface of the snail-shaped reducing ring 14, so that the sealing of the reducing ring 14 in the reducing process is realized, the problem of air leakage caused by size matching when the puncture outfit is used for surgical instruments with different specifications is solved, the double requirements of adjusting the inner diameter of the puncture casing and maintaining the sealing performance are met, and the sliding mode is adopted, so that the puncture outfit has the advantages of being more portable, labor-saving and easy to adjust compared with the traditional dial-type inner diameter converter.
It is connected with the rotation cover 15 that is used for driving reducing ring 14 and slides the end and remove to rotate on the main cavity 11, be provided with on the main cavity 11 and supply to rotate the rotation draw-in groove that cover 15 rotates the connection, it is equipped with the protruding edge that is used for rotating the draw-in groove threaded connection to rotate cover 15, it is used for adjusting protruding edge and rotates the rotation screw thread of the degree of depth in rotating the draw-in groove to rotate to be provided with on the draw-in groove, guide structure is including setting up the pull wire 151 that is used for sliding the end and is connected with reducing ring 14 on rotating cover 15, the one end fixed connection of pull wire 151 is on rotating cover 15, other end fixed connection slides the end at reducing ring 14, it can drive reducing ring 14 through pull wire 151 and slide the end along spout 141 to rotate cover 15 at.
In the process that the sliding end of the reducing ring 14 is driven by the rotating sleeve 15 to move, the pull wire 151 is always kept in a linear or tight state with the sliding end of the reducing ring 14, because the upper sliding block 142 of the reducing ring 14 is limited in the sliding groove 141, in the process that the rotating sleeve 15 rotates, the pull wire 151 does circular motion along the main cavity 11 along with the rotating sleeve 15, and because the length of the pull wire 151 between the reducing ring 14 and the rotating sleeve 15 is kept unchanged, in the rotating process of the rotating sleeve 15, due to the limitation of the length of the pull wire 151, the other end of the pull wire 151 connected to the reducing ring 14 can drive the sliding end of the reducing ring 14 to move due to the tensile force, and in addition, the limitation that the upper sliding block 142 of the reducing ring 14 slides in the sliding groove 141 and the sliding groove 141 are of a spiral structure, so that the sliding end of the reducing ring 14 drives the reducing ring 14 to reduce.
The rotating sleeve 15 is in threaded rotating connection with the main cavity 11 through the rotating groove and the protruding edge, the distance between the traction line 151 and the sliding end of the rotating sleeve 15 and the reducing ring 14 and the height difference between the two ends of the traction line 151 form a triangular structure, when the sliding end of the reducing ring 14 gradually approaches to the center of the reducing ring 14, compared with the state that the sliding end of the reducing ring 14 is located at the outermost end of the reducing ring 14, the traction line 151 between the reducing ring 14 and the rotating sleeve 15 changes, and the length change is realized through the change of the height of the rotating sleeve 15.
When the sliding end of the reducing ring 14 is closer to the center of the reducing ring 14, the height between the rotating sleeve 15 and the reducing ring 14 is smaller, and the traction line 151 between the reducing ring 14 and the rotating sleeve 15 becomes a hypotenuse in a triangle, namely the linear distance between the rotating sleeve 15 and the sliding end of the reducing ring 14 is the largest at the moment; when the sliding end of the reducing ring 14 is closer to the periphery of the reducing ring 14, the height between the rotating sleeve 15 and the reducing ring 14 is larger, the traction line 151 between the reducing ring 14 and the rotating sleeve 15 becomes an approximate right-angle side in a triangle, and the linear distance between the rotating sleeve 15 and the sliding end of the reducing ring 14 is the minimum.
The self-locking structure comprises rotation limitation on the rotating sleeve 15 and sliding limitation on the reducing ring 14, and the purpose is that after the reducing ring 14 reaches a specified inner diameter size, the rotating sleeve 15 does not rotate any more, so that the reducing ring 14 loses sliding traction force, and the reducing ring 14 does not slide any more, so that air leakage caused by inner diameter change is prevented. The self-locking structure comprises a locking buckle 111 connected to the outer side wall of the main cavity 11 in a sliding mode and used for limiting the rotation of the rotating sleeve 15, and a plurality of clamping holes 152 arranged on the rotating sleeve 15 and used for clamping the locking buckle 111, wherein the clamping holes 152 are arranged along the circumferential direction of the outer side wall of the rotating sleeve 15, and the sliding direction of the locking buckle 111 is the axial direction of the main cavity 11; the rotation restriction on the rotating sleeve 15 is realized by the locking buckle 111 clamped on the outer side wall of the rotating sleeve 15 and the main cavity 11, and the locking buckle 111 is connected with the main cavity 11 in a sliding manner, so that the screwing depth can be changed when the rotating sleeve 15 rotates on the main cavity 11.
The self-locking structure further comprises a sliding locking piece 143 arranged at the sliding end of the reducing ring 14 and used for limiting sliding, a sliding hole 144 arranged at the sliding end of the reducing ring 14 and used for enabling the sliding locking piece 143 to slide and rotate and be connected, and a movable cavity 146 arranged at the upper surface of the reducing ring 14 and used for accommodating the sliding locking piece 143, the sliding locking piece 143 is arranged in a [ -shaped structure and comprises a vertical part connected with the sliding hole 144 in a sliding and rotating mode, a disengagement limiting part arranged at the top of the vertical part and a locking part arranged at the bottom end of the vertical part and used for abutting against the movable cavity 146, the sliding hole 144 is connected with a groove 145 used for accommodating the locking part, the movable cavity 146 is arranged in an L-shaped structure, an opening for inserting the locking part is arranged on the movable cavity 146, and after the locking part is inserted into the movable cavity 146, the locking portion can be restrained in the movable cavity 146 through rotation, so that slippage of the slippage end of the reducing ring 14 is restrained.
The sliding limitation on the reducing ring 14 is formed by matching the sliding locking piece 143 with the movable cavity 146, in the sliding process of the sliding end of the reducing ring 14, in order to avoid the interference of the sliding locking piece 143 in the sliding process, the sliding locking piece 143 is folded in the sliding end of the reducing ring 14 by arranging the sliding hole 144 and the groove 145, and the groove 145 is used as a clamping groove of the locking part; when the fixed reducing end that slides of needs, need release the locking portion from recess 145 earlier, can accomplish through rotating the locking piece 143 that slides, press because action of gravity or external force, locking piece 143 that will slide is vertical to fall into movable cavity 146, the locking piece that slides this moment still can reciprocate, and because movable cavity 146 becomes "L" type structure setting, consequently the locking piece that slides rotates once more, make locking portion fall into the less one side of high size in the movable cavity 146, thereby just can restrict the reciprocating of locking piece 143 that slides through the reciprocating of restriction locking portion. And the slip limiting part on the slip locking piece 143 is matched with the locking part, so that the purpose of limiting the slip of the slip end of the reducing ring 14 can be realized.
The bottom end of the movable cavity 146 is provided with a bar magnet, the sliding locking piece 143 is made of a conductive magnet, the sliding locking piece can be attracted or repelled with the bar magnet by changing the current, the releasing limiting part and the locking part are arranged in parallel, and a spring 148 used for driving the releasing limiting part to rotate to be vertical to the length direction of the reducing ring 14 is connected between the releasing limiting piece and the reducing ring 14.
When the locking piece 143 that slides need fall into movable cavity 146, make the locking piece 143 that slides and bar magnet magnetism attract mutually through adjusting the electric current, and will restrict the portion of taking off and rotate to and can produce spring 148 deformation when being parallel with reducing ring 14 length direction, the resilience force of spring 148 adds the magnetic force that magnetism attracted mutually for the limit of sliding takes off can reach the assigned position in the movable cavity 146 fast, accomplishes the restriction of sliding to reducing ring 14 fast. On the contrary, when the sliding locking piece 143 needs to leave the movable cavity 146, the sliding locking piece 143 magnetically repels the bar magnet by adjusting the current, and at this time, the sliding locking piece 143 rises due to the repulsion of the bar magnet when the disengagement limiting part is rotated, and the disengagement limiting part rotates to a state perpendicular to the length direction of the reducing ring 14 by the resilience of the spring 148.
The movable cavities 146 are provided with a plurality of sensors, a sensor used for identifying the sliding locking piece 143 is arranged in each movable cavity 146, a display screen coupled with the sensors is arranged on the rotating sleeve 15, after the sensors identify that the sliding locking piece 143 falls into the corresponding movable cavity 146, signals are transmitted to the display screen, and the display screen displays the inner diameter size of the reducing ring 14 corresponding to the movable cavity 146. The sensor can be a laser geminate transistor arranged on the side wall of the movable cavity 146, when the sliding locking piece 143 falls into the corresponding movable cavity 146, the laser geminate transistor transmits a disconnection signal, after the display screen receives the disconnection signal transmitted by the corresponding laser geminate transistor, the sliding locking piece 143 is judged to fall into the corresponding movable cavity 146, and then the inner diameter size of the reducing ring 14 corresponding to the movable cavity 146 is displayed on the display screen.
The slide blocks 142 are arranged in a plurality of numbers, the slide blocks 142 are arranged in an inverted T-shaped structure and comprise limiting parts for preventing the slide blocks 142 from falling off in the sliding grooves 141 and connecting parts for being connected with the lower surfaces of the reducing rings 14, and the height size of the connecting parts is matched with the depth size of the sliding grooves 141. The slider 142 sets up a plurality ofly, and the degree of depth looks adaptation of connecting portion and spout 141, can make at reducing ring 14 in-process that slides, and reducing ring 14's overlap has a plurality of connecting points to closely laminate with the lower surface the upper surface of reducing ring 14 to make reducing ring 14 all have fine leakproofness in the in-process that slides and surgical instruments motion process.
The sliding block 142 is arranged in a belt-shaped structure, the cross section of the sliding block 142 is arranged in an inverted T-shaped structure, the sliding block comprises a limiting part for preventing the sliding block 142 from falling off in the sliding groove 141 and a connecting part for connecting the lower surface of the reducing ring 14, and the height dimension of the connecting part is matched with the depth dimension of the sliding groove 141. The sliding blocks 142 are arranged in a strip-shaped structure, the connecting parts are matched with the depth of the sliding grooves 141, so that in the sliding process of the reducing ring 14, the upper surface and the lower surface of the reducing ring 14 are tightly attached by a complete connecting belt at the overlapping part of the reducing ring 14, and the reducing ring 14 has good sealing performance in the sliding process and the movement process of surgical instruments.
The bottom of the tube body 12 is provided with a bladder 18 for preventing air leakage at the puncture site. The air bag 18 can be expanded after the tube body 12 enters the puncture position, so that the air bag can be abutted against a wound of the puncture position, a layer of barrier is added at the puncture position, the gas in the abdominal cavity is prevented from flowing out from a gap generated by the movement of the tube body 12 at the puncture position in the operation process, and the sealing performance in the laparoscopic operation is further enhanced.
The body 12 is provided with a thread formation 121 which prevents movement of the cannula part 1 at the puncture site. Blood and cell sap residue appear easily in puncture department, have caused certain difficulty for the fixed of puncture ware, also can cause the puncture ware to remove because unexpected touching in the operation process to make pneumoperitoneum reveal and cause the operation inconvenient. Increase that helicitic texture 121 can make things convenient for the puncture fixed on the human body, and helicitic texture 121 has certain removal resistance, can reduce in the operation process, the removal of body 12 in puncture department, further improves the convenience of operation.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (9)
1. A puncture device with variable diameter comprises a sleeve part (1) and a puncture part (2), and is characterized in that: the sleeve part (1) comprises a channel component for placing a puncture part (2) or other surgical instruments, an air injection component (13) for injecting external air and a reducing component for adapting to the surgical instruments with different sizes, the channel component comprises an inner end placed in an abdominal cavity and an outer end exposed outside, the outer end comprises a main cavity (11) matched with the surgical instruments, the inner end comprises a pipe body (12) communicated with the main cavity (11), a one-way sealing valve is arranged at the communication position of the main cavity (11) and the pipe body (12), and the air injection component (13) is communicated with the pipe body (12);
the reducing assembly sets up in main cavity room (11), is located the top of one-way seal valve, the reducing assembly including be used for changing main cavity room (11) internal diameter size reducing ring (14) and supply reducing ring (14) fixed connection's mount pad (16) and be used for fixed reducing ring (14) internal diameter size from locking structure and be used for driving reducing ring (14) change internal diameter size guide structure, reducing ring (14) become the setting of spiral shape structure and adopt flexible material to make, the upper surface of reducing ring (14) is provided with spout (141), is provided with slider (142) with spout (141) looks adaptation on the lower surface, spout (141) become the spiral structure setting along the length direction of reducing ring (14), slider (142) the in-process that slides in spout (141), the overlap portion of reducing ring (14) upper surface and lower surface can form the laminating sealed face, the width dimension of the fit sealing surface is reduced along with the reduction of the inner diameter dimension of the reducing ring (14) and is expanded along with the expansion of the inner diameter dimension of the reducing ring (14), one end of the reducing ring (14) is fixedly connected to the mounting seat (16), and the other end of the reducing ring slides on the sliding groove (141) in a reciprocating mode.
2. A variable diameter lancing device according to claim 1, wherein: the opening part screw thread of main cavity room (11) rotates and is connected with rotation cover (15) that is used for driving reducing ring (14) to slide the end and removes, be provided with the rotation screw thread that is used for adjusting to rotate cover (15) screw in degree of depth on the lateral wall of main cavity room (11), guide structure slides pull wire (151) of holding the connection including setting up on rotating cover (15) and being used for with reducing ring (14), the one end fixed connection of pull wire (151) is on rotating cover (15), and other end fixed connection slides on holding at reducing ring (14), it can slide along spout (141) to drive reducing ring (14) through pull wire (151) at the pivoted in-process to rotate cover (15) to make the internal diameter of reducing ring (14) expand or reduce.
3. A variable diameter lancing device according to claim 2, wherein: the self-locking structure comprises locking buckles (111) which are connected to the outer side wall of the main cavity (11) in a sliding mode and used for limiting the rotation of the rotating sleeve (15), and clamping holes (152) which are formed in the rotating sleeve (15) and used for clamping the locking buckles (111), wherein the clamping holes (152) are formed in the circumferential direction of the outer side wall of the rotating sleeve (15), and the sliding direction of the locking buckles (111) is the axial direction of the main cavity (11);
the self-locking structure further comprises a sliding locking piece (143) which is arranged at the sliding end of the reducing ring (14) and used for limiting sliding, a sliding hole (144) which is arranged at the sliding end of the reducing ring (14) and used for the sliding rotation connection of the sliding locking piece (143), and a movable cavity (146) which is arranged on the upper surface of the reducing ring (14) and used for accommodating the sliding locking piece (143), wherein the sliding locking piece (143) is arranged in a [ -shaped structure and comprises a vertical part which is connected with the sliding hole (144) in a sliding rotation manner, a limiting and disengaging part which is arranged at the top of the vertical part, and a locking part which is arranged at the bottom end of the vertical part and used for being abutted against the movable cavity (146), the locking part and the vertical part are arranged in a vertical structure, the sliding hole (144) is connected with a groove (145) which is used for accommodating the locking part, the movable cavity (146) is arranged in an L-shaped structure, and an opening for the locking part to enter is, after the locking part enters the movable cavity (146), the locking part can be limited in the movable cavity (146) through rotation, so that the sliding of the sliding end of the reducing ring (14) is limited.
4. The variable diameter puncturing device of claim 3, wherein: activity cavity (146) bottom is provided with bar magnet, the locking piece (143) that slides is made by conductive magnet, can inhale or repel each other through changing electric current and bar magnet magnetism, limit off portion and locking portion parallel arrangement, be connected with between limit off piece and reducing ring (14) and be used for driving limit off portion and rotate to with reducing ring (14) length direction vertically spring (148).
5. The variable diameter puncturing device of claim 3, wherein: activity cavity (146) are provided with a plurality ofly, are provided with the sensor that is used for discerning the locking piece that slides (143) in every activity cavity (146), be provided with the display screen that is coupled with the sensor on rotating sleeve (15), the sensor discerns to slide locking piece (143) and falls into corresponding activity cavity (146) back, with signal transmission to display screen, the display screen shows reducing ring (14) internal diameter size that this activity cavity (146) correspond.
6. A variable diameter lancing device according to claim 1, wherein: the sliding block (142) is provided with a plurality of sliding blocks, the sliding blocks (142) are arranged in an inverted T-shaped structure and comprise limiting parts for preventing the sliding blocks (142) from falling off in the sliding grooves (141) and connecting parts for being connected with the lower surfaces of the reducing rings (14), and the height size of the connecting parts is matched with the depth size of the sliding grooves (141).
7. A variable diameter lancing device according to claim 1, wherein: the sliding block (142) is arranged in a belt-shaped structure, the cross section of the sliding block (142) is arranged in an inverted T-shaped structure, the sliding block comprises a limiting part for preventing the sliding block (142) from falling off in the sliding groove (141) and a connecting part for being connected with the lower surface of the reducing ring (14), and the height dimension of the connecting part is matched with the depth dimension of the sliding groove.
8. A variable diameter lancing device according to claim 1, wherein: an air bag (18) for preventing air leakage at the puncture position is arranged at the bottom of the tube body (12).
9. A variable diameter lancing device according to claim 1, wherein: the tube body (12) is provided with a thread structure (121) for preventing the sleeve part (1) from moving at the puncture position.
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| CN202011562030.3A CN112656489B (en) | 2020-12-25 | 2020-12-25 | Variable-diameter puncture device |
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