CN214104530U - Negative-pressure calculus removing sheath and negative-pressure calculus removing kit - Google Patents
Negative-pressure calculus removing sheath and negative-pressure calculus removing kit Download PDFInfo
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- CN214104530U CN214104530U CN202022683003.3U CN202022683003U CN214104530U CN 214104530 U CN214104530 U CN 214104530U CN 202022683003 U CN202022683003 U CN 202022683003U CN 214104530 U CN214104530 U CN 214104530U
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Abstract
The utility model provides a negative pressure calculus removing sheath, which comprises a negative pressure joint and a sheath pipe structure; the negative pressure joint comprises a connecting part and an operating part which are communicated with each other; the sheath structure comprises a sheath and an elastic isolating piece, the sheath comprises a first part and a second part which are mutually communicated, the first part is arranged on the connecting part and is communicated with the connecting part, and the second part is positioned outside the connecting part and is used for entering the human body; elastic separation member along the length direction of sheath pipe is fixed in the sheath pipe, elastic separation member will the internal channel of sheath pipe is separated into and is got stone passageway and rubble passageway, the utility model discloses still provide a stone external member is got to negative pressure, get the stone sheath including expander and foretell negative pressure, the body includes first somatic part and second somatic part, reaches the effect that improves operation efficiency.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, more specifically say, relate to a stone sheath and negative pressure stone external member are got to negative pressure.
Background
Hydronephrosis refers to obstruction of discharge of urine from the renal pelvis of the kidney of a human body, which leads to enlargement of the renal pelvis and substantial atrophy of the kidney. The most important cause of hydronephrosis is obstruction of the renal pelvis and the junction of ureter of human body by lithangiuria.
In clinical practice, percutaneous renal puncture is performed on a patient and a channel is established so as to conveniently carry out lithotripsy and lithotomy on the patient. In order to realize percutaneous renal puncture on a patient, a doctor punctures the cortex of the patient by using a puncture with a needle core under medical images; after the cortex of the patient is punctured, the needle core is withdrawn from the puncture needle, and the guide wire enters the renal pelvis of the patient from the puncture needle; after a guide wire enters a renal pelvis of a patient from the inside of a puncture needle, the puncture needle is pulled out of the body of the patient along the guide wire, then a channel formed by the puncture needle is directly expanded step by step along the guide wire by using expanders with the sizes from small to large respectively, then the expander with the largest size is arranged in a negative pressure calculus removing sheath, the expander with the negative pressure calculus removing sheath is expanded along the guide wire, finally the expander and the guide wire in the negative pressure calculus removing sheath are taken out of the body of the patient, and a sheath tube of the negative pressure calculus removing sheath is left in the body of the human body. After the patient is punctured into the skin and kidney, a doctor can guide the sheath tube of the negative-pressure calculus removing sheath into the skin and kidney mirror, the laser fiber or a calculus removing instrument and the like to perform calculus breaking and calculus removing operations. However, since the calculus and the crushed stone are taken through the sheath, the visual field of the operation is easily blurred, and the efficiency of the operation is affected.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: aiming at the problems that the operation vision field is easy to be fuzzy and the operation efficiency is affected when stones and gravels are taken through the sheath tube in the prior art, a negative pressure stone taking sheath and a negative pressure stone taking kit are provided.
In order to solve the above technical problem, on the one hand, an embodiment of the present invention provides a negative pressure calculus removing sheath, which includes a negative pressure joint and a sheath tube structure;
the negative pressure joint comprises a connecting part and an operating part which are communicated with each other;
the sheath structure comprises a sheath and an elastic isolating piece, the sheath comprises a first part and a second part which are mutually communicated, the first part is arranged on the connecting part and is communicated with the connecting part, and the second part is positioned outside the connecting part and is used for entering the human body;
the elastic isolating piece is fixed in the sheath along the length direction of the sheath, and divides an internal channel of the sheath into a calculus removing channel and a calculus crushing channel.
Optionally, the lithotomy channel and the lithotripsy channel are of equal length.
Optionally, the connecting portion is detachably connected with the sheath.
Optionally, the negative pressure joint further comprises an elastic clamp and a connecting piece;
a connecting port for the sheath tube to enter the connecting part is arranged on the connecting part;
the elastic clamping pieces are arranged in a plurality and fixed on the connecting part, clamping spaces are formed among the elastic clamping pieces, and the clamping spaces are communicated with the connecting ports;
the connecting piece is detachably connected with the connecting part, the connecting piece is sleeved on the elastic clamping piece, and the connecting piece is used for matching with the elastic clamping piece to clamp the sheath tube;
the first portion comprises a first connecting portion and a second connecting portion communicated with the first connecting portion, the first connecting portion is located in the clamping space and the connecting portion, the second connecting portion is connected between the first connecting portion and the second portion, and the second connecting portion is located outside the negative pressure connector.
Optionally, the connecting part is provided with an external thread, the connecting part is internally provided with an internal thread matched with the external thread on the connecting part, and the connecting part is positioned in the connecting part.
Optionally, the operation portion includes a main pipe, a negative pressure drainage tube and a negative pressure controller, the negative pressure drainage tube is disposed on one side of the main pipe in the length direction and is communicated with the main pipe, a negative pressure control port is disposed on the negative pressure drainage tube, the connection portion is connected to one end of the main pipe, the connection portion is coaxial with the main pipe, the negative pressure controller is disposed on the negative pressure drainage tube, and the negative pressure controller is used for adjusting the size of the negative pressure control port communicated with the outside of the negative pressure lithotomy sheath.
Optionally, the sheath structure further includes at least two tearing operation members, and the tearing operation members are fixed to the first portion and located outside the negative pressure joint.
The embodiment of the utility model provides a pair of stone sheath is got to negative pressure, get the stone passageway and independently part with the rubble passageway, get the stone passageway and can not exert an influence to the rubble passageway, guarantee that the operation field of vision is clear, guarantee the efficiency of operation. When the sheath tube structure is inserted into the dilator, because the elastic isolation piece can deform, any one of the stone taking channel and the gravel channel can be selected to be inserted, and the normal matching of the dilator and the negative-pressure stone taking sheath is ensured.
On the other hand, the embodiment of the utility model provides a stone external member is got to negative pressure, get the stone sheath including expander and foretell negative pressure, the expander includes body and connector, the connector with negative pressure connects and to dismantle the connection, the body is including the first body portion and the second body portion that communicate each other, the one end of first body portion is fixed on the connector, the other end of first body portion is fixed on the second body portion, first body portion is located in the stone sheath is got to negative pressure, the second body portion is located outside the stone sheath is got to negative pressure and is located keeping away from of sheath pipe the one end department of coupling part.
Optionally, the second body portion comprises a plurality of tip portions;
all the tip parts are provided with a first hollow end part and a second hollow end part which are communicated with each other, the cross section of each second hollow end part is conical, each second hollow end part is provided with a large end part and a small end part, each large end part is fixed on the end part of the corresponding first hollow end part, and the outer surface of each large end part and the outer surface of the corresponding first hollow end part are in transition through a smooth outer chamfer;
the lengths of all the tip parts are sequentially increased, the tip parts with the sequentially increased lengths are sequentially connected, and the taper of the second hollow end part of each tip part with the sequentially increased lengths is gradually reduced;
in all the tip portions connected in sequence: the first hollow end part of the tip part with the smallest length is fixed on the joint piece of the first pipe body part, the outer surface of the first hollow end part of the tip part with the smallest length is smoothly transited with the outer surface of the first pipe body part, the second hollow end part of each tip part is connected with the first hollow end part of the adjacent tip part, and the outer surface of the second hollow end part of each tip part is transited with the outer surface of the first hollow end part of the adjacent tip part through a smooth inner chamfer.
Optionally, an end of the second portion away from the first portion is provided with a chamfered surface, and the chamfered surface transitions towards the second hollow end connected to the tip portion of the first pipe body portion.
Drawings
Fig. 1 is a schematic structural view of a negative pressure lithotomy sheath according to an embodiment of the present invention;
fig. 2 is a schematic view of an internal structure of a sheath tube structure of a negative pressure calculus removing sheath according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a negative pressure joint of a negative pressure lithotomy sheath according to an embodiment of the present invention;
fig. 4 is a schematic structural view of an expander according to another embodiment of the present invention;
fig. 5 is an enlarged view of a portion a in fig. 4.
Wherein, in the figures, the respective reference numerals:
1. a negative pressure joint; 11. a connecting portion; 111. a connecting port; 112. an external thread; 12. an operation section; 121. a main pipe; 1211. an insertion end; 122. a negative pressure drainage tube; 123. a negative pressure control port; 124. a negative pressure controller; 13. an elastic clamp; 131. a clamping space; 132. a splint; 133. a protrusion; 14. a connecting member; 2. a sheath structure; 21. a sheath tube; 211. a first portion; 2111. a first connection portion; 2112. a second connecting portion; 212. a second portion; 2121. chamfering; 213. a stone taking channel; 214. a lithotripsy passage; 221. a tear operator; 22. an elastomeric isolator; 3. a pipe body; 31. a first body portion; 321. a tip portion; 3211. a first hollow end portion; 3212. a second hollow end portion; 32211. a large end portion; 32212. a small end portion; 4. a joint member; 5. and (5) sealing the cap.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to fig. 3, an embodiment of the present invention provides a negative pressure calculus removing sheath, which includes a negative pressure joint 1 and a sheath structure 2.
The negative pressure joint 1 includes a connecting portion 11 and an operating portion 12 communicating with each other.
The sheath structure 2 includes a sheath 21 and an elastic spacer 22, the sheath 21 includes a first portion 211 and a second portion 212 communicating with each other, the first portion 211 is provided on the connection portion 11 and communicates with the connection portion 11, and the second portion 212 is located outside the connection portion 11 for entering into the human body.
The elastic spacer 22 is fixed inside the sheath 21 along the longitudinal direction of the sheath 21, and the elastic spacer 22 partitions the internal passage of the sheath 21 into the calculus removing passage 213 and the calculus crushing passage 214.
The utility model provides a pair of stone sheath is got to negative pressure compares with prior art, gets stone passageway 213 and independently parts with rubble passageway 214, gets stone passageway 213 and can not exert an influence to rubble passageway 214, guarantees that the operation field of vision is clear, guarantees the efficiency of operation. When the sheath structure 2 is inserted into the dilator, because the elastic isolation member 22 can deform, any one of the lithotomy channel 213 and the lithotripsy channel 214 can be selected to be inserted, and the normal matching of the dilator and the negative pressure lithotomy sheath is ensured.
In one embodiment, the operation part 12 includes a main tube 121 and a negative pressure drainage tube 122, the negative pressure drainage tube 122 is disposed at one side of the main tube 121 in a length direction and communicates with the main tube 121, a negative pressure control port 123 is disposed on the negative pressure drainage tube 122, the connection part 11 is connected to one end of the main tube 121, the other end of the main tube 121 is set as an insertion end 1211, and the connection part 11 is disposed coaxially with the main tube 121. One end of the negative pressure drainage tube 122 away from the main tube 121 is used for connecting with external instruments. The operation part 12 further comprises a negative pressure controller 124, the negative pressure controller 124 is used for adjusting the size of the negative pressure control port 123 communicated with the outside of the negative pressure lithotomy sheath, and the negative pressure controller 124 is arranged on the negative pressure drainage tube 122. The negative pressure controller 124 comprises a mounting seat, a negative pressure adjusting plate and a locking device, the mounting seat is fixed on the negative pressure drainage tube 122 and avoids the negative pressure control port 123, the locking device is connected to the mounting seat in a sliding manner, the negative pressure adjusting plate is arranged in the mounting seat, and the locking device drives the negative pressure adjusting plate to move so as to adjust the size of the communication between the negative pressure control port 123 and the outside of the negative pressure lithotomy sheath; the tail part of the negative pressure adjusting plate is connected with the locking device; be equipped with tooth portion on the mount pad, negative pressure control mouth 123 is avoided to tooth portion, locking device includes support and spring leaf, spring leaf and negative pressure regulating plate are fixed on the support, be provided with the jut on the spring leaf, when promoting locking device on the mount pad, the jut of spring leaf is compressed for the spring leaf produces the ascending elastic deformation of perpendicular to negative pressure regulating plate plane direction, tooth portion mating reaction on the jut of spring leaf and the mount pad is in order to slide in the interior recess of the tooth portion that the roll-off corresponds. Or the negative pressure controller 124 is a manual valve, the manual valve is fixed on the negative pressure drainage tube 122, and one end of the manual valve is communicated with the negative pressure control port 123.
In one embodiment, as shown in fig. 2, the lithotomy channel 213 and the lithotripsy channel 214 have equal length, the channel size of the lithotripsy channel 213 is the same as that of the lithotripsy channel 214, and the lithotripsy channel 213 and the lithotripsy channel 214 do not need to be distinguished according to the channel size, so that the use convenience of the negative-pressure lithotripsy sheath is improved.
In one embodiment, as shown in fig. 1 and 3, the connection portion 11 is detachably connected to the sheath 21, so that the connection portion 11 can be easily separated from the sheath 21 to facilitate the removal of the sheath 21 from the human body and the replacement of the sheath 21 connected to the connection portion 11.
In one embodiment, as shown in fig. 1 and 3, the vacuum connector 1 further includes a resilient clip member 13 and a connecting member 14.
The connection portion 11 is provided with a connection port 111 for the sheath 21 to enter therein.
The plurality of elastic clip members 13 are provided, all the elastic clip members 13 are fixed on the connection portion 11, a clamping space 131 is formed between all the elastic clip members 13, and the clamping space 131 is communicated with the connection port 111.
The connecting piece 14 is detachably connected with the connecting part 11, the connecting piece 14 is sleeved on the elastic clamping piece 13, and the connecting piece 14 is used for matching with the elastic clamping piece 13 to clamp the sheath 21.
The first portion 211 includes a first connection portion 2111 and a second connection portion 2112 communicating with the first connection portion 2111, the first connection portion 2111 being located inside the clamping space 131 and the connection portion 11, the second connection portion 2112 being connected between the first connection portion 2111 and the second portion 212, the second connection portion 2112 being located outside the negative pressure connector 1.
The elastic clamping piece 13 and the connecting piece 14 realize the detachable connection between the connecting part 11 and the sheath tube 21, and have simple structure and high practicability.
Preferably, the first connection portion 2111 and the second connection portion 2112 are divided along the length direction of the first portion 211. The first connection portion 2111 is located inside the clamping space 131 and the connection portion 11, and the second connection portion 2112 is located outside the negative pressure connector 1, that is, a part of the first portion 211 is located inside the clamping space 131 and the connection portion 11, and another part of the first portion 211 is located outside the negative pressure connector 1.
In one embodiment, as shown in fig. 1 and 3, the connection portion 11 is provided with an external thread 112, the connection member 14 is internally provided with an internal thread (not shown) which is matched with the external thread 112 on the connection portion 11, the connection portion 11 is positioned in the connection member 14, and the connection structure between the connection portion 11 and the connection member 14 is simple and practical.
In one embodiment, as shown in fig. 1 and 3, two elastic clamping members 13 are provided, and the two elastic clamping members 13 are disposed opposite to each other, which is beneficial to reduce the cost of the negative pressure joint 1 and ensure that the sheath 21 is fixed on the negative pressure joint 1.
Preferably, each of the elastic clamp members 13 includes a clamping plate 132 and a protrusion 133 fixed to the clamping plate 132, one end of the clamping plate 132 is fixed to the connecting portion 11, the protrusion 133 is fixed to a side of the clamping plate 132 facing away from the clamping space 131, and the protrusion 133 is adapted to contact an inner portion of the connecting member 14.
In an embodiment, as shown in fig. 1, the sheath structure 2 further includes at least two tearing operation members 221, and the tearing operation members 221 are fixed on the first portion 211 and located outside the negative pressure connector 1.
When the sheath 21 in the human body needs to be taken out from the human body, the connecting part 14 is separated from the connecting part 11, all the elastic clamping pieces 13 are positioned outside the connecting part 14, all the elastic clamping pieces 13 restore under the action of self elasticity, the clamping space 131 is increased, the negative pressure connector 1 is separated from the sheath 21, the sheath 21 separated from the negative pressure connector 1 is gradually separated through the tearing operation piece 221, the gradually separated sheath 21 is slowly taken out from the human body at the same time, the length of the sheath 21 outside the human body is shortened while the sheath 21 is slowly taken out from the human body, and a scalpel is not needed to cut off the length of the sheath 21 outside the human body.
Preferably, the tearing operation members 221 are provided in two, and the two tearing operation members 221 are symmetrically provided on the first portion 211 for axially tearing the sheath 21 into two parts.
In addition, as shown in fig. 1 to 5, the embodiment of the present invention further provides a stone external member is got to negative pressure, including expander and foretell stone sheath is got to negative pressure, the expander includes body 3 and connector 4, connector 4 can be dismantled with negative pressure and be connected, body 3 is including the first body 31 and the second body that communicate each other, the one end of first body 31 is fixed on connector 4, the other end of first body 31 is fixed on the second body, first body 31 is located the stone sheath is got to negative pressure, the second body is located the stone sheath is got to negative pressure and is located the one end department of keeping away from coupling unit 11 of sheath pipe 21 outside the stone sheath is got to negative pressure.
The connector 4 is connected on the negative pressure connector 1, so that the stable connection of the pipe body 3 and the negative pressure calculus removing sheath is realized. The joint piece 4 is separated from the negative pressure joint 1, so that the dilator can be conveniently separated from the negative pressure lithotomy sheath.
In one embodiment, as shown in fig. 1-5, the second body portion includes a plurality of tips 321.
All the tip portions 321 have a first hollow end portion 3211 and a second hollow end portion 3212 which are communicated with each other, the cross-sectional shape of each second hollow end portion 3212 is a cone, each second hollow end portion 3212 has a large end portion 32211 and a small end portion 32212, each large end portion 32211 is fixed on the end portion of the corresponding first hollow end portion 3211, and the outer surface of each large end portion 32211 is in smooth outer chamfer transition with the outer surface of the corresponding first hollow end portion 3211.
All the tip portions 321 are sequentially increased in length, the tip portions 321 sequentially increased in length are sequentially connected, and the taper of the second hollow end portion 3212 of the tip portions 321 sequentially increased in length is gradually reduced.
In all the tip portions 321 connected in sequence: the first hollow end portion 3211 of the tip portion 321 with the smallest length is fixed on the joint piece 4 of the first pipe body portion 31, the outer surface of the first hollow end portion 3211 of the tip portion 321 with the smallest length smoothly transitions with the outer surface of the first pipe body portion 31, the second hollow end portion 3212 of each tip portion 321 is connected with the first hollow end portion 3211 of the adjacent tip portion 321, and the outer surface of the second hollow end portion 3212 of each tip portion 321 and the outer surface of the first hollow end portion 3211 of the adjacent tip portion 321 smoothly transition with an inner chamfer.
The dilator is provided with the tip parts 321 of a plurality of different specifications, the dilator can realize the multi-stage dilation on the human body in the process of entering the human body, the effect of the percutaneous nephrocentesis achieved by using the dilator is equivalent to the effect of the percutaneous nephrocentesis achieved by the cooperation of the traditional dilators of a plurality of different specifications, the operation process is simplified, and the operation time is saved. The smooth outer chamfer transition between the outer surface of each large end 32211 and the outer surface of the corresponding first hollow end 3211 avoids the dilator from stabbing the renal pelvis of the patient and contusing human tissue. The smooth transition between the outer surface of the first hollow end portion 3211 of the tip portion 321 of minimum length and the outer surface of the first body portion 31 avoids the dilator from pricking the renal pelvis of the patient and contusing human tissue. The smooth inner chamfer transition between the outer surface of the second hollow end portion 3212 of each tip portion 321 and the outer surface of the first hollow end portion 3211 of the adjacent tip portion 321 avoids the dilator from stabbing the renal pelvis of a patient and contusing human tissues. The tube body 3 has good support performance, and the expander is not easy to deform in the expanding process. The dilator minimizes tissue damage during dilation.
Preferably, the tip portions 321 are provided in three or four in number.
Preferably, the first tubular body 31 and the plurality of tips 321 are coaxially arranged, ensuring a rapid passage of the guide wire through the tubular body 3.
Preferably, the connector 4 and the negative pressure connector 1 are connected in a clamping manner or in a threaded connection manner, so that the dilator is prevented from being separated from the negative pressure lithotomy sheath in the dilation process.
For ease of understanding, the dilator comprising the plurality of tips 321 is configured and used with a negative pressure lithotomy sheath:
the method comprises the following steps: the tube body 3 is moved from the insertion end 1211 of the negative pressure joint 1 to the interior of the negative pressure lithotomy sheath, and then the tube body 3 is moved in the lithotomy channel 213 until the joint piece 4 is connected to the negative pressure joint 1, and at this time, the second tube body part is positioned outside the sheath tube structure 2.
Step two: puncturing the cortex of a patient under medical images by using a puncture needle (not shown) with a needle core (not shown); after the cortex of the patient is punctured, the needle core is withdrawn from the puncture needle, and the guide wire enters the renal pelvis of the patient from the puncture needle; after a guide wire (not shown) is inserted into the renal pelvis of the patient from the puncture needle, the puncture needle is pulled out of the body of the patient along the guide wire.
Step three: the guide wire penetrates through the assembled dilator and the dilator in the negative pressure calculus removing sheath, so that the assembled dilator and the negative pressure calculus removing sheath are expanded along the guide wire path; after dilation, the assembled dilator and negative pressure lithotomy sheath are separated, leaving the second portion 212 in the body.
Step four: a negative pressure suction device (not shown) is connected through the operation part 12, the insertion end 1211 of the negative pressure joint 1 is sealed through the sealing cap 5, a skin nephroscope (not shown), an endoscope (not shown), a laser optical fiber (not shown) and the like are led into the negative pressure lithotomy sheath from the central hole of the sealing cap 5, and lithotripsy is carried out through the lithotripsy channel 214; the negative pressure suction device is started, and the negative pressure is adjusted through the operation part 12 according to the pressure of the renal pelvis and the under-mirror definition; the stone is broken and sucked at the same time, and the negative pressure suction equipment is disconnected after the stone breaking, the stone suction and the stone discharging are finished.
Step five: the surgical instrument such as a percutaneous nephroscope exits the negative pressure calculus removing sheath, the sheath tube structure 2 and the negative pressure joint 1 are separated, and the device is placed into the fistulation tube (not shown) through the lithotripsy channel 214 or the calculus removing channel 213.
Step six: the sheath structure 2 is axially torn in two by the tearing operation member 221 until the sheath structure 2 is completely withdrawn from the body.
Step seven: the fistulation tube is fixed and connected with a drainage collection device (not shown), and the operation is completed.
In one embodiment, as shown in fig. 1, a chamfered surface 2121 is provided on an end of the second portion 212 away from the first portion 211, and the chamfered surface 2121 transitions to the second hollow end 3212 connected to the tip portion 321 of the first barrel portion 31, so that the end of the sheath 21 smoothly transitions to the tip portion 321 connected to the end of the sheath 21, thereby preventing the sheath 21 from contusing tissues during entering the human body.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A negative pressure calculus removing sheath is characterized by comprising a negative pressure joint and a sheath pipe structure;
the negative pressure joint comprises a connecting part and an operating part which are communicated with each other;
the sheath structure comprises a sheath and an elastic isolating piece, the sheath comprises a first part and a second part which are mutually communicated, the first part is arranged on the connecting part and is communicated with the connecting part, and the second part is positioned outside the connecting part and is used for entering the human body;
the elastic isolating piece is fixed in the sheath along the length direction of the sheath, and divides an internal channel of the sheath into a calculus removing channel and a calculus crushing channel.
2. The negative pressure lithotomy sheath of claim 1, wherein said lithotomy channel and said lithotripsy channel are of equal length.
3. The negative pressure lithotomy sheath of claim 1, wherein said connection portion is removably connected to said sheath.
4. The negative pressure lithotomy sheath of claim 3, wherein said negative pressure connector further comprises a resilient clamp and a connector;
a connecting port for the sheath tube to enter the connecting part is arranged on the connecting part;
the elastic clamping pieces are arranged in a plurality and fixed on the connecting part, clamping spaces are formed among the elastic clamping pieces, and the clamping spaces are communicated with the connecting ports;
the connecting piece is detachably connected with the connecting part, the connecting piece is sleeved on the elastic clamping piece, and the connecting piece is used for matching with the elastic clamping piece to clamp the sheath tube;
the first portion comprises a first connecting portion and a second connecting portion communicated with the first connecting portion, the first connecting portion is located in the clamping space and the connecting portion, the second connecting portion is connected between the first connecting portion and the second portion, and the second connecting portion is located outside the negative pressure connector.
5. The negative pressure calculus removing sheath of claim 4 wherein the connecting portion is provided with external threads and the interior of the connector is provided with internal threads that mate with the external threads on the connecting portion, the connecting portion being located within the connector.
6. The negative pressure lithotomy sheath according to claim 1, wherein the operation portion comprises a main tube, a negative pressure drainage tube and a negative pressure controller, the negative pressure drainage tube is disposed at one side of the main tube in the length direction and is communicated with the main tube, a negative pressure control port is disposed on the negative pressure drainage tube, the connection portion is connected to one end of the main tube, the connection portion is disposed coaxially with the main tube, the negative pressure controller is disposed on the negative pressure drainage tube, and the negative pressure controller is used for adjusting the size of the communication between the negative pressure control port and the outside of the negative pressure lithotomy sheath.
7. The negative pressure calculus removing sheath of any one of claims 1-6, wherein the sheath structure further comprises at least two tearing operation members, and the tearing operation members are fixed on the first portion and located outside the negative pressure joint.
8. A negative pressure calculus removing kit, which comprises an expander and the negative pressure calculus removing sheath as claimed in any one of claims 1 to 7, wherein the expander comprises a pipe body and a connector, the connector is detachably connected with the negative pressure connector, the pipe body comprises a first pipe body part and a second pipe body part which are mutually communicated, one end of the first pipe body part is fixed on the connector, the other end of the first pipe body part is fixed on the second pipe body part, the first pipe body part is positioned in the negative pressure calculus removing sheath, and the second pipe body part is positioned outside the negative pressure calculus removing sheath and is positioned at one end of the sheath pipe far away from the connecting part.
9. The negative pressure stone extraction kit of claim 8, wherein the second body portion comprises a plurality of tips;
all the tip parts are provided with a first hollow end part and a second hollow end part which are communicated with each other, the cross section of each second hollow end part is conical, each second hollow end part is provided with a large end part and a small end part, each large end part is fixed on the end part of the corresponding first hollow end part, and the outer surface of each large end part and the outer surface of the corresponding first hollow end part are in transition through a smooth outer chamfer;
the lengths of all the tip parts are sequentially increased, the tip parts with the sequentially increased lengths are sequentially connected, and the taper of the second hollow end part of each tip part with the sequentially increased lengths is gradually reduced;
in all the tip portions connected in sequence: the first hollow end part of the tip part with the smallest length is fixed on the joint piece of the first pipe body part, the outer surface of the first hollow end part of the tip part with the smallest length is smoothly transited with the outer surface of the first pipe body part, the second hollow end part of each tip part is connected with the first hollow end part of the adjacent tip part, and the outer surface of the second hollow end part of each tip part is transited with the outer surface of the first hollow end part of the adjacent tip part through a smooth inner chamfer.
10. The negative pressure stone extraction kit of claim 9, wherein an end of the second portion distal from the first portion is provided with a chamfered surface that transitions toward the second hollow end connected to the tip portion of the first body portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022683003.3U CN214104530U (en) | 2020-11-18 | 2020-11-18 | Negative-pressure calculus removing sheath and negative-pressure calculus removing kit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022683003.3U CN214104530U (en) | 2020-11-18 | 2020-11-18 | Negative-pressure calculus removing sheath and negative-pressure calculus removing kit |
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| Publication Number | Publication Date |
|---|---|
| CN214104530U true CN214104530U (en) | 2021-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022683003.3U Active CN214104530U (en) | 2020-11-18 | 2020-11-18 | Negative-pressure calculus removing sheath and negative-pressure calculus removing kit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214104530U (en) |
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2020
- 2020-11-18 CN CN202022683003.3U patent/CN214104530U/en active Active
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Address after: 518000 workshop B1, 101, 201, Shangrong industrial plant, No.2, Baolong 5th Road, Baolong community, Baolong street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Cooper Medical Co.,Ltd. Address before: 518000 workshop B1, 101, 201, Shangrong industrial plant, No.2, Baolong 5th Road, Baolong community, Baolong street, Longgang District, Shenzhen City, Guangdong Province Patentee before: COPPER MEDICAL TECHNOLOGY Co.,Ltd. |