CN111887950A - Multiple telescopic puncture tube assembly for surgical operation - Google Patents
Multiple telescopic puncture tube assembly for surgical operation Download PDFInfo
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- CN111887950A CN111887950A CN202010784013.8A CN202010784013A CN111887950A CN 111887950 A CN111887950 A CN 111887950A CN 202010784013 A CN202010784013 A CN 202010784013A CN 111887950 A CN111887950 A CN 111887950A
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- tube
- hollow
- hollow tube
- rib
- pipe
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3415—Trocars; Puncturing needles for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3474—Insufflating needles, e.g. Veress needles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B2017/3454—Details of tips
Abstract
A multi-time retractable spike assembly for use in surgical procedures comprises a top housing and a bottom housing assembly, and an instrument seal and zero seal mounted between the top housing and the bottom housing assembly, the bottom housing assembly comprising a bottom housing, a first hollow tube comprising a first tip and a first tail with a first tube wall extending therebetween, and a second hollow tube comprising a second tip and a second tail with a second tube wall extending therebetween; the first pipe head is connected with the bottom shell, and the second pipe head is arranged in the first hollow pipe; the inner surface of the first pipe wall comprises a plurality of groups of circumferentially and uniformly distributed female buckle bodies, each group of female buckle bodies comprises m inner convex ring ribs which are uniformly distributed along the axial direction of the first hollow pipe, and two adjacent inner convex ring ribs define an inner concave ring groove; from the near end to the far end, the inner convex ring ribs are provided with m inner convex ring ribs, and the inner concave ring grooves are provided with m-1 inner concave ring grooves.
Description
Technical Field
The present invention relates to minimally invasive surgical instruments, and more particularly to a multi-retractable spike assembly for use in surgical procedures.
Background
A puncture instrument is a surgical instrument used in minimally invasive surgery (especially hard-tube endoscopic surgery) for establishing an artificial passage into a body cavity. Typically consisting of a spike assembly and a spike. The general clinical use mode is as follows: a small opening is cut on the skin of a patient, the puncture needle penetrates through the puncture tube assembly, and then the puncture needle penetrates through the abdominal wall through the skin opening to enter a body cavity. Once inside the body cavity, the needle is removed, leaving the puncture tube assembly as a passage for instruments into and out of the body cavity.
In the hard tube laparoscopic surgery, a pneumoperitoneum machine is usually adopted to continuously perfuse 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 operation space. The puncture tube assembly typically consists of a hollow tube, a housing, a sealing membrane (also known as an instrument seal) and a zero seal (also known as a self-seal). The puncture tube assembly penetrates from the outside of the body cavity to the inside of the body cavity and is used as a passage for instruments to enter and exit the body cavity. The housing connects the hollow tube, zero seal and sealing membrane into a sealed system. The zero seal generally does not provide a seal for the inserted instrument, but automatically closes and forms a seal when the instrument is removed. The sealing membrane grips the instrument and forms a seal as the instrument is inserted.
When the puncture tube assembly is secured to the abdominal wall of a patient, the hollow tube thereof may be divided into an extracorporeal section (length H1), a body wall section (length H2) and an intracorporeal section (length H3). The length H2 of the body wall segment varies, and when applied to different patients, the abdominal wall thickness varies from patient to patient, e.g., the difference between obese patients and the smaller abdominal wall thickness is greater; the wall section H2 varies for different puncture positions and puncture angles even when used with the same patient. The length H1 of the extracorporeal section cannot be reserved too long or too short, which is inconvenient for inserting the instrument, and especially when the puncture tube component is used as a main operation hole and needs to be repeatedly switched, the puncture tube component is too short which is inconvenient for operating the instrument at different inclination angles. The length H3 of the in-vivo section is not changed greatly generally, and is reserved for 20-30 mm. The length of the hollow tube of the puncture tube assembly in the prior art is fixed, and the requirements of different scene in the field cannot be met.
Disclosure of Invention
In one aspect of the present invention, a multi-retractable spike assembly for use in surgery is presented comprising a top housing and a bottom housing assembly, and an instrument seal and a zero seal mounted between the top housing and the bottom housing assembly. The bottom housing assembly comprises a bottom housing, a first hollow tube and a second hollow tube, the first hollow tube comprising a first tube head and a first tube tail and a first tube wall extending therebetween, the second hollow tube comprising a second tube head and a second tube tail and a second tube wall extending therebetween; the first pipe head is connected with the bottom shell, and the second pipe head is arranged in the first hollow pipe. The inner surface of the first pipe wall comprises a plurality of groups of circumferentially and uniformly distributed female buckle bodies, each group of female buckle bodies comprises m inner convex ring ribs which are uniformly distributed along the axial direction of the first hollow pipe, and two adjacent inner convex ring ribs define an inner concave ring groove; from the near end to the far end, the inner convex ring ribs are sequentially a first inner convex ring rib, a second inner convex ring rib … … and an m-th inner convex ring rib, and the inner concave ring grooves are sequentially a first inner concave ring groove, a second inner concave ring groove … … and an m-1-th inner concave ring groove. The outer surface of the proximal end of the second hollow tube comprises a first outer convex ring rib and an outer notch, and the first outer convex ring rib can be matched with the inner concave ring groove to form a rotary buckle fit which can rotate around the axis of the hollow tube and cannot move axially. The puncture tube assembly further comprises a rotary clamping state and a movable state; under the rotary clamping state, the first outer convex ring rib of the second hollow pipe is matched with any inner concave ring groove to form rotary buckle fit which can rotate around the axis of the hollow pipe and cannot move axially; in the movable state, the female buckle body is aligned with the outer notch, and the second hollow pipe can axially move relative to the first hollow pipe.
In one version, the hollow tube length of the lower housing component comprises m-1 length settings; when the first outer convex ring rib of the second hollow pipe is matched with the first inner concave ring groove, the length of the hollow pipe of the lower shell component is Lt1, namely the initial length; when the first outer convex ring rib of the second hollow pipe is matched with the second inner concave ring groove, the length of the hollow pipe of the lower shell component is Lt 2; by parity of reasoning, when the first outer convex ring rib of the second hollow pipe is matched with the m-1 th inner concave ring groove, the length of the hollow pipe of the lower shell component is Lt (m-1).
In still another embodiment, the hollow tube length Lt (m-1) satisfies the following relationship:
Lt(m-1)＝Lt1+(m-1)*P2
wherein:
lt (m-1) -the length of the hollow pipe when the first outer convex annular rib is matched with the m-1 th inner concave annular groove;
lt 1-the length of the hollow pipe when the first outer convex ring rib is matched with the first inner concave ring groove;
m is the serial number of the inner convex ring rib;
p2-the distance between two adjacent inner concave ring grooves.
In yet another aspect, the length L1 of the first hollow tube satisfies the relationship:
3*Lt1/8≤L1≤Lt1/3，(m-1)*P2＜L1
wherein:
lt 1-the length of the hollow pipe when the first outer convex ring rib is matched with the first inner concave ring groove;
l1 — length of first hollow tube;
m is the serial number of the inner convex ring rib;
p2-the distance between two adjacent inner concave ring grooves.
In yet another aspect, a hollow tube seal is mounted to the first tube end. The hollow tube seal comprises a proximal elastomeric ring having an inner diameter Dt1 and a distal elastomeric ring having an inner diameter Dt 3; the second pipe wall comprises a second outer cylindrical surface, and the far-end elastic ring is in interference fit with the second outer cylindrical surface. In yet another alternative, the hollow tube seal is made of a thermoset elastomer or a thermoplastic elastomer material, and the interference fit between the distal elastic ring of the tube seal and the second outer cylindrical surface presses against the tube seal to form a rotational peak force F1; the rotating external force F2 is exerted on the first hollow tube and the second hollow tube, and when F2 is not more than F1, the first hollow tube and the second hollow tube do not generate relative rotation displacement; when F2 is larger than F1, the first hollow tube and the second hollow tube generate relative rotation displacement.
In one aspect of the invention, a retractable puncture tube assembly is provided that includes a top housing and a bottom housing assembly, and an instrument seal and a zero seal mounted between the top housing and the bottom housing assembly. The bottom housing assembly comprises a bottom housing, a first hollow tube and a second hollow tube, the first hollow tube comprising a first tube head and a first tube tail and a first tube wall extending therebetween, the second hollow tube comprising a second tube head and a second tube tail and a second tube wall extending therebetween; the first pipe head is connected with the bottom shell, and the second pipe head is arranged in the first hollow pipe. The internal surface of first pipe wall contains the multiunit box body of hoop equipartition, and every group box body contains a plurality of interior protruding ring muscle along its axial evenly distributed, and an indent annular is injectd to two adjacent interior protruding ring muscle. The outer surface of the second tube head comprises a first outer convex ring rib and a convex rib notch, and the convex rib notch cuts off the first outer convex ring rib to form a non-closed ring structure. The puncture tube assembly comprises a rotary clamping state and a movable state; under the rotary clamping state, the first outer convex ring rib of the second hollow pipe is matched with any inner concave ring groove to form rotary buckle fit which can rotate around the axis of the hollow pipe and cannot move axially; in the active state, the female buckle body is aligned with the convex rib notch, and the second hollow pipe can axially move relative to the first hollow pipe.
In another embodiment, the second tip includes a tube end notch that cuts away the tube wall in the area adjacent to the rib notch to form a cantilevered rib.
In another aspect, the tube end notch includes a first tube end notch, and the rib notch includes a first rib notch, and the first tube end notch cuts off the tube wall in the vicinity of the first rib notch to form a first cantilever rib and a second cantilever rib; the distance between the first cantilever rib and the second cantilever rib is smaller than the circumferential width of the inner convex ring rib.
In yet another aspect, the first cantilevered rib and the second cantilevered rib have flexibility; when the female buckle body is aligned with the convex rib notch, the first hollow pipe and the second hollow pipe bear certain axial tension F3 to enable the first hollow pipe and the second hollow pipe to move towards opposite directions, and the first cantilever rib and the second cantilever rib can be enabled to deform; so that the inner convex ring rib passes through the convex rib notch; then the first cantilever rib and the second cantilever rib rebound and recover, and then the cantilever ends of the first cantilever rib and the second cantilever rib enter and are matched with the concave ring groove.
In another embodiment, the device further comprises a hollow tube sealing element arranged at the first tube tail. The hollow tube seal comprises a proximal elastomeric ring having an inner diameter Dt1 and a distal elastomeric ring having an inner diameter Dt 3; the second pipe wall comprises a second outer cylindrical surface, and the far-end elastic ring is in interference fit with the second outer cylindrical surface.
In yet another alternative, the hollow tube seal is made of a thermoset elastomer or a thermoplastic elastomer material, and the interference fit between the distal elastic ring of the tube seal and the second outer cylindrical surface presses against the tube seal to form a rotational peak force F1; the rotating external force F2 is exerted on the first hollow tube and the second hollow tube, and when F2 is not more than F1, the first hollow tube and the second hollow tube do not generate relative rotation displacement; when F2 is larger than F1, the first hollow tube and the second hollow tube generate relative rotation displacement.
In one aspect of the present invention, a retractable bottom housing assembly is provided, comprising a bottom housing, a first hollow tube, and a second hollow tube; the first hollow tube comprises a first tube head and a first tube tail with a first tube wall extending therebetween, and the second hollow tube comprises a second tube head and a second tube tail with a second tube wall extending therebetween; the first pipe head is connected with the bottom shell, and the second pipe head is arranged in the first hollow pipe. The internal surface of first pipe wall contains the multiunit box body of hoop equipartition, and every group box body contains a plurality of interior protruding ring muscle along its axial evenly distributed, and an indent annular is injectd to two adjacent interior protruding ring muscle. The outer surface of the second tube head comprises a first outer convex ring rib and a convex rib notch, and the convex rib notch cuts off the first outer convex ring rib to form a non-closed ring structure. The puncture tube assembly comprises a rotary clamping state, and in the rotary clamping state, the first outer convex ring rib of the second hollow tube is matched with any inner concave ring groove to form rotary buckle matching which can rotate around the axis of the hollow tube and cannot move axially.
In one scheme, the second pipe head further comprises pipe wall cutting grooves, a pair of pipe wall cutting grooves cut off a part of pipe wall at the convex rib cutting opening to form a circular arch bridge arm, and the outer surface of the circular arch bridge arm comprises a protrusion.
In another scheme, the second pipe wall comprises a second outer cylindrical surface, the protrusions on the outer surface of the annular arch bridge arm transversely extend outwards beyond the outer cylindrical surface, and when the female buckle body is aligned with the notches of the convex ribs, the protrusions on the outer surface of the annular arch bridge arm are in interference fit with the inner convex ring ribs.
In another scheme, the annular arch bridge arm has flexibility and elasticity, and the annular arch bridge arm has flexibility and elasticity. When the female buckle body is aligned with the convex rib notch, the first hollow pipe and the second hollow pipe bear certain axial tension F3 to enable the first hollow pipe and the second hollow pipe to move towards opposite directions, the inner convex ring rib inwards extrudes the protrusion on the outer surface of the annular arch bridge arm to force the annular arch bridge arm to inwards shrink and deform to avoid, the inner convex ring rib crosses the protrusion and passes through the convex rib notch, then the annular arch bridge arm rebounds, and the protrusion on the outer surface of the annular arch bridge arm enters and is matched with the inner concave ring groove.
In another scheme, when the protrusions on the outer surface of the annular arch bridge arm enter and are matched with the concave ring grooves, the first hollow pipe and the second hollow pipe are relatively rotated to a proper angle, and the first outer convex ring rib and the concave ring grooves are mutually matched to form a rotary buckle fit which can rotate around the axis of the hollow pipe and cannot axially move.
In yet another aspect, a hollow tube seal is mounted to the first tube end. The hollow tube seal comprises a proximal elastomeric ring having an inner diameter Dt1 and a distal elastomeric ring having an inner diameter Dt 3; and the far-end elastic ring is in interference fit with the second outer cylindrical surface.
In yet another alternative, the hollow tube seal is made of a thermoset elastomer or a thermoplastic elastomer material, and the interference fit between the distal elastic ring of the tube seal and the second outer cylindrical surface presses against the tube seal to form a rotational peak force F1; the rotating external force F2 is exerted on the first hollow tube and the second hollow tube, and when F2 is not more than F1, the first hollow tube and the second hollow tube do not generate relative rotation displacement; when F2 is larger than F1, the first hollow tube and the second hollow tube generate relative rotation displacement.
In yet another aspect, a puncture tube assembly comprises any of the bottom housing components described above, and further comprises a top housing, an instrument seal and a zero seal sandwiched between the top housing and the bottom housing component in a compressed state, the top housing and the bottom housing components being connected to each other to form an integrated sealing system.
In one aspect of the present invention, a bottom housing assembly that facilitates telescoping of the bottom housing assembly is presented. Comprises a bottom shell, a first hollow tube and a second hollow tube; the first hollow tube comprises a first tube head and a first tube tail with a first tube wall extending therebetween, and the second hollow tube comprises a second tube head and a second tube tail with a second tube wall extending therebetween; the first pipe head is connected with the bottom shell, and the second pipe head is arranged in the first hollow pipe. The inner surface of the first pipe wall comprises a plurality of groups of circumferentially and uniformly distributed female buckle bodies, each group of female buckle bodies comprises m inner convex ring ribs which are uniformly distributed along the axial direction of the first hollow pipe, and two adjacent inner convex ring ribs define an inner concave ring groove; from the near end to the far end, the inner convex ring ribs are sequentially a first inner convex ring rib, a second inner convex ring rib … … and an m-th inner convex ring rib, and the inner concave ring grooves are sequentially a first inner concave ring groove, a second inner concave ring groove … … and an m-1-th inner concave ring groove. The outer surface of the proximal end of the second hollow tube comprises a first outer convex ring rib and a convex rib notch, and the first outer convex ring rib and the inner concave ring groove can be matched with each other to form a rotary buckle fit which can rotate around the axis of the hollow tube and cannot move axially; when the female buckle body is aligned with the convex rib notch, the second hollow pipe can axially move relative to the first hollow pipe.
In one scheme, the second pipe head further comprises pipe wall cutting grooves, a pair of pipe wall cutting grooves cut off a part of pipe wall at the convex rib cutting opening to form a circular arch bridge arm, and the outer surface of the circular arch bridge arm comprises a protrusion; the second pipe wall comprises a second outer cylindrical surface, the protrusions on the outer surface of the annular arch bridge arm transversely extend outwards beyond the outer cylindrical surface, and when the female buckle body is aligned with the notches of the convex ribs, the protrusions on the outer surface of the annular arch bridge arm are in interference fit with the inner convex ring ribs.
In another scheme, the annular arch bridge arm has flexibility and elasticity, and the annular arch bridge arm has flexibility and elasticity. When the female buckle body is aligned with the convex rib notch, the first hollow pipe and the second hollow pipe bear certain axial tension F3 to enable the first hollow pipe and the second hollow pipe to move towards opposite directions, the inner convex ring rib inwards extrudes the protrusion on the outer surface of the annular arch bridge arm to force the annular arch bridge arm to inwards shrink and deform to avoid, the inner convex ring rib crosses the protrusion and passes through the convex rib notch, then the annular arch bridge arm rebounds, and the protrusion on the outer surface of the annular arch bridge arm enters and is matched with the inner concave ring groove.
In another embodiment, the first hollow tube and the second hollow tube are made of transparent materials, and the first outer convex ring rib and the inner convex ring rib can be seen by naked eyes.
In another embodiment, the outer surface of the first tube end includes a first alignment mark, the outer surface of the second tube wall includes a second alignment mark, and when the first alignment mark and the second alignment mark are aligned with each other, the female buckle body is aligned with the outer notch.
In yet another aspect, the second outer surface of the tubular wall includes graduations that mark the length of the second sleeve exposed outside the first sleeve.
In yet another aspect, a hollow tube seal is mounted to the first tube end. The hollow tube seal comprises a proximal elastomeric ring having an inner diameter Dt1 and a distal elastomeric ring having an inner diameter Dt 3; and the far-end elastic ring is in interference fit with the second outer cylindrical surface.
In yet another alternative, the hollow tube seal is made of a thermoset elastomer or a thermoplastic elastomer material, and the interference fit between the distal elastic ring of the tube seal and the second outer cylindrical surface presses against the tube seal to form a rotational peak force F1; the rotating external force F2 is exerted on the first hollow tube and the second hollow tube, and when F2 is not more than F1, the first hollow tube and the second hollow tube do not generate relative rotation displacement; when F2 is larger than F1, the first hollow tube and the second hollow tube generate relative rotation displacement.
In yet another aspect, a puncture tube assembly, any of the bottom housing assemblies described above, further comprising a top housing, an instrument seal and a zero seal sandwiched between the top housing and the bottom housing assembly in a compressed state, the top housing and the bottom housing assembly being connected to each other to form an integrated sealing system.
In one aspect of the present invention, a puncture instrument is provided that includes a puncture tube assembly and a puncture needle extending through the puncture tube assembly.
Drawings
For a fuller understanding of the nature of the present invention, reference should be made to the following detailed description taken together with the accompanying figures in which:
fig. 1 is an exploded view of a spike assembly 1;
FIG. 2 is a side projection view of the spike assembly 1;
FIG. 3 is a 2-2 cross-sectional view of the spike assembly 1;
fig. 4 is a simulated schematic view of the puncture tube assembly 1 secured to the abdominal wall;
FIG. 5 is a perspective schematic view of the bottom housing assembly 40 a;
FIG. 6 is a schematic perspective view of the bottom housing 100;
fig. 7 is a side view of first hollow tube 200;
FIG. 8 is a cross-sectional view of 8-8 of FIG. 7;
figure 9 is a projection view of second hollow tube 300 from the proximal end to the distal end;
FIG. 10 is a cross-sectional view 10-10 of FIG. 9;
FIG. 11 is a cross-sectional view of the bottom housing assembly 40 a;
FIG. 12 is an enlarged view 12-12 of FIG. 11;
FIG. 13 is an enlarged view of 13-13 of FIG. 11;
fig. 14 is a schematic perspective view of second hollow tube 300 a;
figure 15 is a side view of second hollow tube 300 a;
fig. 16 is a schematic mating view of first sleeve 200 and second hollow tube 300 a;
FIG. 17 is an enlarged view of 17-17 of FIG. 16;
FIG. 18 is a cross-sectional view of the bottom housing assembly 40 b;
figure 19 is a proximal to distal projection view of second hollow tube 300 b;
figure 20 is a side view of second hollow tube 300 b;
FIG. 21 is an enlarged partial cross-sectional view of 21-21 of FIG. 20;
fig. 22 is a perspective view of the first sleeve 200 and the second hollow tube 300b in mating relationship;
FIG. 23 is a schematic view of the exterior of the hoop arch bridge arm with the protrusions entering and mating with the female ring grooves;
FIG. 24 is a schematic view of the interference fit of the projections on the exterior of the arch bridge arms with the inwardly projecting ribs;
FIG. 25 is a cross-sectional view of the bottom housing assembly 40 c;
FIG. 26 is a side view of a bottom housing assembly containing alignment indicia;
the same reference numbers will be used throughout the drawings to refer to identical or similar parts or elements.
Detailed Description
Embodiments of the present invention are disclosed herein, however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which can be embodied in various forms. Therefore, the disclosure herein is not to be interpreted as limiting, but merely as a basis for the claims and as a basis for teaching one skilled in the art how to employ the present invention. Embodiments of the present disclosure will now be described in detail with reference to the drawings, where for convenience, the party proximal to the operator is defined as the proximal end and the party distal from the operator is defined as the distal end.
Figures 1-3 depict a puncture tube assembly 1 for laparoscopic surgery. The spike assembly 1 comprises an axis 2 and, arranged axially in series, a top housing 30, an instrument seal 10, a zero seal 20 and a bottom housing 40. Wherein the instrument seal 10 and the zero seal 20 are made of a super elastic material such as silicone rubber, etc. The top housing 30 and the bottom housing 40 are made of a rigid thermoplastic plastic such as polycarbonate. The instrument seal 10 includes a sealing lip 11 defined by a sealing membrane 17 and a sealing membrane outer flange 19. The zero seal 20 comprises a zero seal flange 29 and a zero seal body 27 connected thereto and extending distally, a pair of seal sheets 21 connected to the zero seal body 27 and extending distally to form a "duck bill" shaped openable and closable duck bill valve. The top housing 30 contains an open puncture tube assembly inlet 31 defined by a proximal housing 37 and an upper retaining ring 33 connected to the top housing 30 and extending distally. The bottom housing 40 comprises a distal housing 47, a lower retaining ring 43 coupled to the distal housing 47 and extending proximally, a transition housing 45 coupled to the distal housing 47 and extending distally to form a hollow tube 50, the hollow tube 50 comprising a hollow tube channel 53 defined by a hollow tube wall 51, the hollow tube wall 51 extending distally and forming a hollow tube lip 55, the hollow tube lip 55 defining an open hollow tube outlet 57. In this example, the instrument seal 10 and the zero seal 20 are mounted between a top housing 30 and a bottom housing 40. Wherein the zero seal flange 29, the sealant membrane outer flange 19 are sandwiched between the lower retainer ring 43 and the upper retainer ring 33 and are in a compressed state, the top housing 30 further comprises an attachment post 39 connected to the proximal housing 37 and extending distally, the bottom housing 40 further comprises an attachment hole 49 matching the shape and position of the attachment post, the attachment post 39 and the attachment hole 49 are in an interference fit, thereby connecting the top housing 30, the instrument seal 10, the zero seal 20 and the bottom housing 40 into an integral sealing system. In this example the top shell and the bottom shell form a whole through fixed column and fixed orifices interference connection, however, various modes such as threaded connection, rotatory buckle connection, glue bonding can also be adopted.
Referring to fig. 3 and 4, when the puncture tube assembly 1 penetrates from the outside of the body cavity to the inside of the body cavity, as a passage for the instruments to enter and exit the body cavity, a pneumoperitoneum machine is generally used to continuously perfuse the body cavity of the patient with gas (such as carbon dioxide gas) and maintain a stable gas pressure (about 13-15 mmHg) so as to obtain a sufficient operation space. When no external instrument is inserted, the pair of sealing sheets 21 of the zero seal 20 is closed, and the zero seal 20 forms a zero seal assembly with the lower fixing ring 43, the transition housing 45 and the hollow tube 50, preventing gas in the body cavity from leaking to the outside of the body through the puncture tube assembly. When the external instrument is inserted, the external instrument opens the zero seal, gas in the body cavity can flow to the area between the zero seal and the sealing membrane through the zero seal, but the sealing lip 11 tightens the instrument, preventing gas from leaking through the sealing membrane. In this example, the sealing membrane and the zero seal are in direct contact and form a non-removable sealing system, however, the sealing membrane and the zero seal may not be in direct contact, and two separate and quick-release instrument seal assemblies and zero seal assemblies may be formed. For example, CN201610630336.5 entitled "a crimp-type piercer sealing system" discloses a structure comprising an instrument sealing assembly (first sealing assembly) and a zero sealing assembly (second sealing assembly). It will be appreciated by those skilled in the art that there are numerous implementations of the instrument seal and zero seal disclosed in the prior art, such as the four-lobed instrument seal assembly disclosed in US8029475, such as the pleated instrument seal assembly disclosed in US7789861, such as the instrument seal assembly comprising a woven cloth disclosed in US6482181, such as the four-lobed zero seal disclosed in US5443452, such as the duckbill zero seal disclosed in US8034032, and the like. Other disclosed instrument seals, zero seals and slight adaptations of their housings may be used in place of the instrument seals, zero seals, top housing, bottom housing, etc. described herein.
Referring now to fig. 4, when the puncture tube assembly 1 is secured to the abdominal wall of a patient, the hollow tube 50 thereof may be divided into an extracorporeal section (length H1), a body wall section (length H2) and an intracorporeal section (length H3). The length H2 of the body wall segment varies, and when applied to different patients, the abdominal wall thickness varies from patient to patient, e.g., the difference between obese patients and the smaller abdominal wall thickness is greater; the wall section H2 varies for different puncture positions and puncture angles even when used with the same patient. The length H1 of the extracorporeal section cannot be reserved too long or too short, which is inconvenient for inserting the instrument, and especially when the puncture tube component is used as a main operation hole and needs to be repeatedly switched, the puncture tube component is too short which is inconvenient for operating the instrument at different inclination angles. The length H3 of the in-vivo section is not changed greatly generally, and is reserved for 20-30 mm. The length of the hollow tube 50 of the spike assembly 1 is fixed and cannot meet the requirements of different field situations.
Fig. 5-13 depict an improved bottom housing assembly 40a comprising a bottom housing 100, a first hollow tube 200 and a second hollow tube 300. Referring first to fig. 5-6, the bottom housing 100 includes a distal housing 47 with a lower retaining ring 43 connected to the distal housing 47 and extending proximally; the transition housing 45 is connected at one end to the distal housing and at its other end extends to form a hollow tube mounting wall 46, said hollow tube mounting wall 46 extending proximally and being connected to a hollow tube retaining wall 44, said hollow tube retaining wall 44 defining the bottom housing through hole 41.
Referring to fig. 7-8, the first hollow tube 200 comprises a first tube head 210 and a first tube end 230 with a first tube wall 220 extending therebetween. The first tube end 230 includes a first outer cylindrical surface 240. The inner surface of the first tubular wall 220 comprises a first set of circumferentially and uniformly distributed female buckle bodies 251 and a second set of circumferentially and uniformly distributed female buckle bodies 252. In this example, the first set of female buckle bodies 251 and the second set of female buckle bodies 252 are identical. The first group of button bodies 251 (the second group of button bodies 252) are distributed at an angle ANG1 (fig. 7) in the circumferential region of the first hollow tube. The first group of female buckle bodies 251 (the second group of female buckle bodies 252) comprises m inner convex ring ribs 261 which are uniformly distributed along the axial direction of the first hollow pipe, and two adjacent inner convex ring ribs define an inner concave ring groove 265; from the near end to the far end, the inner convex ring ribs are sequentially a first inner convex ring rib, a second inner convex ring rib … … and an m-th inner convex ring rib, and the inner concave ring grooves are sequentially a first inner concave ring groove, a second inner concave ring groove … … and an m-1-th inner concave ring groove.
Second hollow tube 300 includes a second tip 310 and a second tube end 330 and a second tube wall 320 extending therebetween. The inner surface of the second tube wall defines a hollow channel and the outer surface thereof comprises a second outer cylindrical surface 370 having a diameter Dw 1. The outer surface of the second cartridge 310 includes a first outwardly convex annular rib 340. The second hollow tube also includes an outer notch 350 that cuts the first outwardly projecting annular rib to form a non-closed loop structure. In this example, the outer notches 360 comprise a first outer notch 361 and a second outer notch 362 uniformly distributed along the circumferential direction of the second hollow tube, in this example, the first outer notch 361 and the second outer notch 362 are substantially the same, and the first outer notch 361 (the second outer notch 362) is distributed at an angle ANG2 in the circumferential region of the second hollow tube (see fig. 9).
Referring to fig. 11-12, the first cartridge 210 is coupled to the bottom housing 100. In this example, the outer surface of first tip 210 matches the shape and size of hollow tube mounting wall 46, and in one embodiment, first tip 210 and hollow tube mounting wall 46 are glued together. In another alternative, the outer surface of the first cartridge 210 is fixed to the inner wall of the hollow tube stopper 44 as a whole by interference fit.
Referring to fig. 11, the head of the second hollow tube is mounted inside the first hollow tube. The bottom housing assembly 40a includes a rotating snap-fit state and an active state; under the rotary clamping state, the first outer convex ring rib of the second hollow pipe is matched with any inner concave ring groove to form rotary buckle fit which can rotate around the axis of the hollow pipe and cannot move axially; in the movable state, the female buckle body is aligned with the outer notch, and the second hollow pipe can axially move relative to the first hollow pipe. Specifically, the shape and size of the first outer convex ring rib 340 are designed to match with the inner concave ring grooves 265, and the first outer convex ring rib 340 and any one of the inner concave ring grooves 265 match with each other to form a rotary snap fit which can rotate around the axis of the hollow pipe and cannot move axially. The inner annular rib 261 of the first and second female buckle bodies is shaped and dimensioned to mate with the first outer notch 351 (second outer notch 352), and the second hollow tube is axially movable relative to the first hollow tube when the inner annular rib 261 is aligned with the first outer notch 351 (as will be appreciated in conjunction with fig. 7 and 9).
The length of the hollow tube of the lower shell component comprises m-1 length settings; when the first outer convex ring rib of the second hollow pipe is matched with the first inner concave ring groove, the length of the hollow pipe of the lower shell component is Lt1, namely the initial length; when the first outer convex ring rib of the second hollow pipe is matched with the second inner concave ring groove, the length of the hollow pipe of the lower shell component is Lt 2; by parity of reasoning, when the first outer convex ring rib of the second hollow pipe is matched with the m-1 th inner concave ring groove, the length of the hollow pipe of the lower shell component is Lt (m-1). The length of the hollow pipe is Lt (m-1) and satisfies the following relation:
Lt(m-1)＝Lt1+(m-1)*P2
wherein:
lt (m-1) -the length of the hollow pipe when the first outer convex annular rib is matched with the m-1 th inner concave annular groove;
lt 1-the length of the hollow pipe when the first outer convex ring rib is matched with the first inner concave ring groove;
m is the serial number of the inner convex ring rib;
p2-the distance between two adjacent inner concave ring grooves.
As shown in fig. 11 and 12, the bottom housing assembly 40a further comprises a hollow tube seal 500 mounted to the second stub, the hollow tube seal 500 comprising a proximal elastomeric ring 510 having an inner diameter Dt1 and a distal elastomeric ring 530 having an inner diameter Dt 3. The seal 500 is mounted on the exterior of the first outer cylindrical surface 240 with the proximal elastomeric ring 510 mating with the first outer cylindrical surface 240 and the distal elastomeric ring 530 mating with the second outer cylindrical surface 370. In one embodiment, the proximal elastic ring 510 is fixed to the first outer cylindrical surface 240 by glue.
The hollow tube seal 500 is made of a thermoset elastomer or a thermoplastic elastomer. In one design, the distal elastic ring 530 is an interference fit with the second outer cylindrical surface 370. Enough extrusion force is formed between the distal end elastic ring 530 and the second outer cylindrical surface 370 to form a rotating peak force F1, the rotating peak force F2 is applied to the first hollow tube and the second hollow tube, and when F2 is not more than F1, the first hollow tube and the second hollow tube do not generate relative rotation displacement; when F2 is greater than F1, the first hollow tube and the second hollow tube can generate relative rotation displacement, so that the rotation snap fit is mutually rotated and separated, and when the female buckle body is aligned with the outer notch, the second hollow tube can axially move relative to the first hollow tube, namely, the second hollow tube is in a movable state. Reasonable interference is selected through an experimental method, and the material and the hardness of the hollow tube sealing element 500 are reasonably selected, so that the rotation peak force F1 is controlled in a comfortable and safe range, and in a specific scheme, F1 is more than or equal to 10N and less than or equal to 20N. When F1 is less than 10N, the safety factor for preventing the first hollow pipe and the second hollow pipe from generating accidental relative rotation is not high enough; when F1 > 20N, the operation comfort of rotating the first hollow tube and the second hollow tube relative to each other is not good enough.
It will be appreciated by those skilled in the art that when the bottom housing assembly 40a is substituted for the bottom housing 40 in the puncture tube assembly 1 to form a new puncture tube assembly 1a (not shown) for laparoscopic surgery, the surgeon may rotate the first and second hollow tubes relative to each other to align the inwardly projecting annular ribs with the outer notches of the second hollow tube, thereby disengaging the rotating snaps, depending on the thickness of the abdominal wall of the patient, the position and puncture angle of the puncture tube assembly, and the personal handling habits; moving the second hollow tube into position and rotating the second hollow tube to form a rotating snap fit changes the overall length of the hollow tube of the spike assembly. The fixed depth of the puncture tube assembly in the abdominal wall is further adjusted, so that the external section (length H1), the body wall section (length H2) and the internal section (length H3) of the puncture tube assembly are arranged ideally.
The length setting of the first hollow tube 200 has a greater impact on the convenience of the needle cannula assembly 1a in-situ application, and in a preferred embodiment, the length L1 of the first hollow tube 200 satisfies the relationship:
3*Lt1/8≤L1≤Lt1/3，(m-1)*P2＜L1
when L1 is larger than 3/8 of Lt1, the puncture tube assembly in the shortest state is inconvenient to use, and the lengths of the body wall segment (long H2) and the body interior segment (long H3) are insufficient. When L1 is less than 1/3 of Lt1, L1 is too short and the adjustable extension length of the puncture assembly is not significant enough.
Fig. 14-18 depict an improved bottom housing assembly 40b comprising a bottom housing 100, a first hollow tube 200, and a second sleeve 300 a. Referring now to fig. 14-15, second hollow tube 300a comprises second tip 310a and second tail 330 and second tube wall 320 extending therebetween. The inner surface of the second tube wall defines a hollow channel and the outer surface thereof comprises an outer cylindrical surface 370 having a diameter Dw 1. The outer surface of the second ferrule includes a first outer annular rib 340a and a rib cut 350a that cuts the first outer annular rib to form a non-closed ring structure. In this example, the rib slit 360a includes a first rib slit 361a (not shown) and a second rib slit 362a (not shown) uniformly distributed along the circumferential direction of the second hollow tube, in this example, the first rib slit 361a and the second rib slit 362a are substantially the same, and the first rib slit 361a (the second rib slit 362a) has an angle of ANG3 (not shown, the angle of area is understood with reference to fig. 7 and 9) distributed in the circumferential direction of the second hollow tube. The second ferrule 310a includes a tube end cutout 350a that cuts away the tube wall in the area adjacent to the rib cutout to form a cantilevered rib. In this example, the tube-end cut 350a includes a first tube-end cut 351a and a second tube-end cut 352a, and the first tube-end cut 351a cuts the tube wall in the vicinity of the first rib cut 361a to form a first cantilever rib 341a and a second cantilever rib 342 a; the second tube-end cutout 352a cuts the tube wall in the vicinity of the second bead cutout 362a to form the third and fourth cantilever beads 343a and 344 a. The end of the cantilever rib comprises a chamfer.
Referring to fig. 16-17, in one design, the circumferential angular distribution ANG3 of the rib cut is less than the circumferential angular distribution ANG1 of the body of the female buckle. More specifically, the distance between the first cantilever rib 341a and the second cantilever rib 342a is smaller than the circumferential width of the inner convex ring rib, and similarly, the distance between the third cantilever rib 343a and the fourth cantilever rib 344a is also smaller than the width of the inner convex ring rib; the first, second, third and fourth cantilever ribs are flexible; when the female buckle body is aligned with the convex rib notch, the first hollow pipe and the second hollow pipe bear certain axial tension F3 to enable the first hollow pipe and the second hollow pipe to move towards opposite directions, and the first cantilever rib, the second cantilever rib, the third cantilever rib and the fourth cantilever rib can be deformed; so that the inner convex ring rib passes through the convex rib notch; then the first, second, third, and fourth cantilevered ribs rebound to recover, and the cantilevered ends of the first, second, third, and fourth cantilevered ribs enter and mate with the concave ring groove 265. And continuing to axially pull to enable the cantilever rib to deform, enabling the next inner convex ring rib to pass through the convex rib notch, and then enabling the cantilever rib to recover and enter and be matched with the inner concave ring groove. The cantilever muscle has the guide effect, and when the cantilever muscle was matched with the indent annular, relative rotation first hollow tube and second hollow tube to suitable angle, then first evagination annular muscle matches the constitution each other with the indent annular and can rotate and can not axial displacement's rotatory buckle cooperation around the hollow tube axis. The cantilever muscle still has the anticreep function of certain degree, and only when the box body (interior bulge loop muscle) aligns with the bulge muscle incision, first hollow tube and second hollow tube bear certain axial tension F3 and make first hollow tube and second hollow tube move to opposite direction and just can lead to first evagination ring muscle and indent annular to become invalid, only bear the axial tension F3 that lasts under aforementioned alignment state moreover, just can make the deformation that the cantilever muscle is repeated and recover. Therefore, the cantilever rib facilitates guiding of the rotary buckle and prevents the rotary buckle from being disengaged.
Referring to fig. 11 and 18, and in conjunction with the description of the bottom housing assembly 40a, the bottom housing assembly 40b differs from the bottom housing assembly 40a primarily in the manner of engagement of the cantilevered ribs with the inwardly projecting annular ribs and the inwardly recessed annular grooves, and the other configurations and engagement are substantially identical. The bottom housing component 40b further comprises a hollow tube seal 500 mounted to the second stub, the mating relationship of the hollow tube seal 500 being identical to the mating relationship of the bottom housing component 40a and will not be described in detail herein. Similarly, the length of the hollow tube of the lower housing component 40b comprises m-1 length settings, and when the first outer annular bead of the second hollow tube is matched with the m-1 inner annular groove, the length of the hollow tube of the lower housing component is Lt (m-1), and Lt (m-1) satisfies the relationship.
Similarly, when the bottom housing assembly 40b replaces the bottom housing 40a in the puncture tube assembly 1 to form a new puncture tube assembly 1b (not shown in the figure) for laparoscopic surgery, the surgeon can relatively rotate the first hollow tube and the second hollow tube to align the inner convex ring rib with the outer notch of the second hollow tube according to the thickness of the abdominal wall of the patient, the position and puncture angle of the puncture tube assembly, personal operation habits and the like, so that the rotary buckle is disengaged; moving the second hollow tube into position and rotating the second hollow tube to form a rotating snap fit changes the overall length of the hollow tube of the spike assembly. The fixed depth of the puncture tube assembly in the abdominal wall is further adjusted, so that the external section (length H1), the body wall section (length H2) and the internal section (length H3) of the puncture tube assembly are arranged ideally. It will be appreciated by those skilled in the art that the features of the second hollow tube 300 and the second hollow tube 300a may be combined with each other. For example, replacing the second pipe end notch 352a and the second bead notch 362a of the second hollow pipe 300a with the second outer notch 351 of the second hollow pipe 300 to form a new second hollow pipe can realize a function similar to that of the second hollow pipe 300 a. In the case of the above-described embodiment, two sets of female snap bodies, two sets of outer notches, and two sets of rib notches are provided, but they may be divided into more sets.
19-25 depict an improved bottom housing assembly 40c comprising a bottom housing 100, a first hollow tube 200, and a second sleeve 300 b. Referring now to fig. 19-21, second hollow tube 300b comprises second tip 310b and second tail 330 with second tube wall 320 extending therebetween. The inner surface of the second tube wall defines a hollow channel and the outer surface thereof comprises an outer cylindrical surface 370 having a diameter Dw 1. The outer surface of the second ferrule includes a first outer annular rib 340b and a rib cut 350b that cuts the first outer annular rib to form a non-closed ring structure. In this example, the rib notch 360b includes a first rib notch 361b and a second rib notch 362b uniformly distributed along the circumferential direction of the second hollow tube, in this example, the first rib notch 361b and the second rib notch 362b are substantially the same, and the distribution angle of the first rib notch 361b (the second rib notch 362b) in the circumferential region of the second hollow tube is ANG 4. The second pipe head 310b further includes pipe wall cutting grooves 350b, and a pair of the pipe wall cutting grooves cut off a part of the pipe wall at the rib cutting opening to form a circular arch bridge arm, and the outer surface of the circular arch bridge arm includes a protrusion. As shown in fig. 20-21, tube wall cuts 350b in this example comprise a first pair of tube wall cuts 351b and a second pair of tube wall cuts 352b, wherein first pair of tube wall cuts 351b cut a portion of the tube wall at first rib cut 361b to form a first circumferential arch leg 345b, the first circumferential arch leg comprising a first protrusion 346b on its exterior; the second pair of tube wall cut-out slots 352b cut out a portion of the tube wall at the second bead cut-out 362b to form a second circumferential arch leg 347b, the exterior of which includes a first protrusion 348 b.
The second stub is mounted in the first hollow tube, see fig. 22-25. In one design, the circumferential arch bridge arm is flexible and elastic, the protrusions on the outer surface of the circumferential arch bridge arm transversely extend outwards beyond the outer cylindrical surface 370, and when the female buckle body is aligned with the notches of the convex ribs, the protrusions on the outer surface of the circumferential arch bridge arm are in interference fit with the inner convex ring ribs. Fig. 24 depicts a virtual fit of the first projection 346b in interference fit with the inner ring bead when the female buckle body is aligned with the bead cut. The cooperation principle is as follows: when the female buckle body is aligned with the convex rib notch, the first hollow pipe and the second hollow pipe bear certain axial tension F3 to enable the first hollow pipe and the second hollow pipe to move towards opposite directions, the inner convex ring rib inwards extrudes the protrusion on the outer surface of the annular arch bridge arm to force the annular arch bridge arm to inwards shrink and deform to avoid, the inner convex ring rib crosses the protrusion and passes through the convex rib notch, then the annular arch bridge arm rebounds, and the protrusion on the outer surface of the annular arch bridge arm enters and is matched with the inner concave ring groove 265. In more detail, as shown in fig. 23-24, when the inner rib 261 is aligned with the first rib cut 361b, the first hollow tube and the second hollow tube are subjected to a certain axial pulling force F3 to move the first hollow tube and the second hollow tube in opposite directions, the inner rib 261 presses the first protrusion 346b inward to cause the first annular arch arm 345b to contract and deform inward, and then the inner rib 261 crosses the first protrusion 346b and passes through the first rib cut 361 b; first circumferential arch leg 345b then springs back and first projection 346b enters and mates with inner concave ring groove 265. And continuing to axially pull, inwards extruding the protrusions on the outer surface of the annular arch bridge arm by the inner convex ring ribs to force the annular arch bridge arm to contract inwards to deform and avoid, enabling the inner convex ring ribs to cross the protrusions and pass through the notches of the convex ribs by the convex ring ribs, then rebounding the annular arch bridge arm, and enabling the protrusions on the outer surface of the annular arch bridge arm to enter and be matched with the inner concave ring grooves. When the bulge on the outer surface of the annular arch bridge arm enters and is matched with the concave ring groove, the first hollow pipe and the second hollow pipe are rotated to a proper angle relatively, and the first convex ring rib and the concave ring groove are matched with each other to form a rotating buckle which can rotate around the axis of the hollow pipe and cannot move axially. The annular arch bridge arm and the protrusions on the outer surface of the annular arch bridge arm have guiding and anti-disengagement functions, only when the female buckle body (the inner convex ring rib) is aligned with the notches of the convex ribs, the first hollow pipe and the second hollow pipe bear certain axial tension F3, so that the first outer convex ring rib and the inner concave ring groove can be caused to lose effectiveness only when the first hollow pipe and the second hollow pipe move towards opposite directions, and only when the annular arch bridge arm is in the aligned state, the annular arch bridge arm can be repeatedly deformed and restored only when the annular arch bridge arm bears continuous axial tension F3. Therefore, the cantilever rib facilitates guiding of the rotary buckle and prevents the rotary buckle from being disengaged.
Referring to fig. 11 and 25, and in conjunction with the description of the bottom housing assembly 40a, the bottom housing assembly 40c differs from the bottom housing assembly 40a primarily in the manner of engagement of the aforementioned annular arch legs with the inwardly projecting annular ribs and the inwardly recessed annular grooves, and the other configurations and engagement are substantially identical. The bottom housing assembly 40c further comprises a hollow tube seal 500 mounted to the second stub, the mating relationship of the hollow tube seal 500 being identical to the mating relationship of the bottom housing assembly 40a and will not be described in detail herein. Similarly, the length of the hollow tube of the lower housing component 40c includes m-1 length settings, and when the first outer annular bead of the second hollow tube is matched with the m-1 inner annular groove, the length of the hollow tube of the lower housing component is Lt (m-1), and Lt (m-1) satisfies the relationship.
Similarly, when the bottom housing assembly 40c replaces the bottom housing 40a in the puncture tube assembly 1 to form a new puncture tube assembly 1b (not shown in the figure) for laparoscopic surgery, the surgeon can relatively rotate the first hollow tube and the second hollow tube to align the inner annular rib with the outer notch of the second hollow tube according to the thickness of the abdominal wall of the patient, the position and puncture angle of the puncture tube assembly, personal operation habits and the like, so that the rotating buckle is disengaged; moving the second hollow tube into position and rotating the second hollow tube to form a rotating snap fit changes the overall length of the hollow tube of the spike assembly. The fixed depth of the puncture tube assembly in the abdominal wall is further adjusted, so that the external section (length H1), the body wall section (length H2) and the internal section (length H3) of the puncture tube assembly are arranged ideally. It will be appreciated by those skilled in the art that the features of the second hollow tube 300 and the second hollow tube 300b may be combined with each other. For example, replacing the second pair of wall-cut grooves 352b and the second rib-cut grooves 362b of the second hollow tube 300b with the second outer notch 351 of the second hollow tube 300 to form a new second hollow tube can achieve the similar function as the second hollow tube 300 b. The above described cases are two sets of female snap bodies, two sets of outer notches, two sets of circumferential arch legs, but could be divided into more sets.
Various methods of rotational snap-fitting and telescoping of the first and second hollow tubes have been shown above. The female buckle body is aligned with the outer notch for facilitating the adjustment process. In one scheme, the first hollow pipe and the second hollow pipe are made of transparent materials, and the matching position of the first outer convex ring rib and the inner convex ring rib can be seen by naked eyes; in another aspect, as shown in fig. 26, in one aspect, the outer surface of the first tube end includes a first alignment mark, the outer surface of the second tube wall includes a second alignment mark, and when the first alignment mark and the second alignment mark are aligned with each other, the female buckle body is aligned with the outer gap. In yet another alternative, as shown in fig. 26, the second tube wall outer surface includes graduations that mark the length of the second sleeve exposed outside the first sleeve. Preferably, the graduation marks and the second alignment marks are incorporated.
Those skilled in the art will readily appreciate that the spike assembly also requires a mating spike. The puncture needle penetrates through the puncture tube assembly to form a puncture outfit, then the puncture outfit and the puncture outfit penetrate through the abdominal wall through an incision arranged on the abdominal wall of a patient in advance to enter a body cavity, and then the puncture needle is taken away, and the hollow tube is used as a passage for instruments to enter and exit the body cavity. The introducer needle generally includes a handle portion, a shaft portion and a distal portion. For example, CN201611125444.3 entitled "improved bladeless visual puncture needle" is incorporated herein by reference, which is the puncture needle disclosed in the chinese invention application filed on 12/9/2016. The puncture tube component formed by the telescopic bottom shell component can be contracted into the shortest length at the initial position, and then is matched with the improved knife-free visual puncture needle to form the puncture device for penetrating through the abdominal wall, and the puncture needle is taken away, and then the first hollow tube and the second hollow tube are relatively rotated, so that the fixed depth of the puncture tube component on the abdominal wall is adjusted, and the external section (long H1), the body wall section (long H2) and the internal section (long H3) of the puncture tube component can be ideally arranged. A retractable puncture needle can also be designed to match the retractable puncture tube assembly.
Many different embodiments and examples of the invention have been shown and described. The individual embodiments each contain typically different distinguishing features, which can be interchanged or superimposed on one another. One of ordinary skill in the art can adapt the methods and apparatus described herein by making appropriate modifications without departing from the scope of the invention. Several modifications have been mentioned, and other modifications will occur to those skilled in the art. The scope of the invention should, therefore, be determined with reference to the appended claims, and not be construed as limited to the details of structure, materials, or acts shown and described in the specification and drawings.
Claims (7)
1. A multi-retractable spike assembly for use in surgery comprising a top housing and a bottom housing assembly, and an instrument seal and a zero seal mounted between the top housing and the bottom housing assembly, wherein:
1) the bottom housing assembly comprises a bottom housing, a first hollow tube and a second hollow tube, the first hollow tube comprising a first tube head and a first tube tail and a first tube wall extending therebetween, the second hollow tube comprising a second tube head and a second tube tail and a second tube wall extending therebetween; the first pipe head is connected with the bottom shell, and the second pipe head is arranged in the first hollow pipe;
2) the inner surface of the first pipe wall comprises a plurality of groups of circumferentially and uniformly distributed female buckle bodies, each group of female buckle bodies comprises m inner convex ring ribs which are uniformly distributed along the axial direction of the first hollow pipe, and two adjacent inner convex ring ribs define an inner concave ring groove; from the near end to the far end, the inner convex ring ribs are sequentially a first inner convex ring rib, a second inner convex ring rib … … and an m-th inner convex ring rib, and the inner concave ring grooves are sequentially a first inner concave ring groove, a second inner concave ring groove … … and an m-1-th inner concave ring groove;
3) the outer surface of the proximal end of the second hollow tube comprises a first outer convex ring rib and an outer notch, and the first outer convex ring rib can be matched with the inner concave ring groove to form a rotary buckle fit which can rotate around the axis of the hollow tube and cannot move axially.
2. The puncture tube assembly of claim 1, wherein: comprises a rotary clamping state and an active state; under the rotary clamping state, the first outer convex ring rib of the second hollow pipe is matched with any inner concave ring groove to form rotary buckle fit which can rotate around the axis of the hollow pipe and cannot move axially; in the movable state, the female buckle body is aligned with the outer notch, and the second hollow pipe can axially move relative to the first hollow pipe.
3. The puncture tube assembly of claim 2, wherein: the length of the hollow tube of the lower shell component comprises m-1 length settings; when the first outer convex ring rib of the second hollow pipe is matched with the first inner concave ring groove, the length of the hollow pipe of the lower shell component is Lt1, namely the initial length; when the first outer convex ring rib of the second hollow pipe is matched with the second inner concave ring groove, the length of the hollow pipe of the lower shell component is Lt 2; by parity of reasoning, when the first outer convex ring rib of the second hollow pipe is matched with the m-1 th inner concave ring groove, the length of the hollow pipe of the lower shell component is Lt (m-1).
4. The spike assembly of claim 3, wherein: the length of the hollow pipe is Lt (m-1) and satisfies the following relation:
Lt(m-1)＝Lt1+(m-1)*P2
wherein:
lt (m-1) -the length of the hollow pipe when the first outer convex annular rib is matched with the m-1 th inner concave annular groove;
lt 1-the length of the hollow pipe when the first outer convex ring rib is matched with the first inner concave ring groove;
m is the serial number of the inner convex ring rib;
p2-the distance between two adjacent inner concave ring grooves.
5. The puncture tube assembly of claim 4, wherein: the length L1 of the first hollow tube satisfies the relation:
3*Lt1/8≤L1≤Lt1/3，(m-1)*P2＜L1
wherein:
lt 1-the length of the hollow pipe when the first outer convex ring rib is matched with the first inner concave ring groove;
l1 — length of first hollow tube;
m is the serial number of the inner convex ring rib;
p2-the distance between two adjacent inner concave ring grooves.
6. The spike assembly of claim 3, further comprising a hollow tube seal mounted to the first tube end. The hollow tube seal comprises a proximal elastomeric ring having an inner diameter Dt1 and a distal elastomeric ring having an inner diameter Dt 3; the second pipe wall comprises a second outer cylindrical surface, and the far-end elastic ring is in interference fit with the second outer cylindrical surface.
7. The puncture tube assembly of claim 6, wherein: the hollow tube sealing element is made of a thermosetting elastomer or a thermoplastic elastomer material, and a distal end elastic ring of the tube sealing element is in interference fit with the second outer cylindrical surface and extruded to form a rotating peak force F1; the rotating external force F2 is exerted on the first hollow tube and the second hollow tube, and when F2 is not more than F1, the first hollow tube and the second hollow tube do not generate relative rotation displacement; when F2 is larger than F1, the first hollow tube and the second hollow tube generate relative rotation displacement.
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| CN202010784013.8A CN111887950A (en) | 2020-08-06 | 2020-08-06 | Multiple telescopic puncture tube assembly for surgical operation |
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0649634A1 (en) * | 1993-10-26 | 1995-04-26 | Ethicon Endo-Surgery | Trocar with a retractable cannula |
| US5464011A (en) * | 1994-10-24 | 1995-11-07 | Bridge; Robert S. | Tracheostomy tube |
| US5882344A (en) * | 1995-10-18 | 1999-03-16 | Stouder, Jr.; Albert E. | Adjustable length cannula and trocar |
| US5957888A (en) * | 1995-10-10 | 1999-09-28 | United States Surgical Corporation | Surgical cannula having a variable length |
| US20050096507A1 (en) * | 2003-10-30 | 2005-05-05 | Prosek Michael U. | Adjustable length cannula |
| US20060200186A1 (en) * | 2005-03-04 | 2006-09-07 | Marchek Connie P | Adjustable access device for surgical procedures |
| US20100256453A1 (en) * | 2009-04-02 | 2010-10-07 | Tyco Healthcare Group Lp | Access portal including sponge |
| US20130006184A1 (en) * | 2008-10-13 | 2013-01-03 | Applied Medical Resource Corporation | Single port access system |
| CN103591096A (en) * | 2013-10-12 | 2014-02-19 | 苏州市吴中区曙光铜管厂 | Telescopic copper pipe component |
| CN205359512U (en) * | 2016-01-14 | 2016-07-06 | 赵文博 | Marrow puncture needle |
| CN105832282A (en) * | 2010-09-19 | 2016-08-10 | 意昂外科有限公司 | Micro laparoscopy devices and improvement thereof |
| CN107095707A (en) * | 2017-06-03 | 2017-08-29 | 成都五义医疗科技有限公司 | A kind of puncture outfit casing tube component with air bag |
| CN108290033A (en) * | 2015-11-25 | 2018-07-17 | 拜耳医药保健有限公司 | Syringe and connector system |
| CN108938056A (en) * | 2018-08-01 | 2018-12-07 | 张云峰 | A kind of scalable fixed hysteroscope puncture outfit |
| CN109069185A (en) * | 2016-04-01 | 2018-12-21 | 伊西康有限责任公司 | Surgical access device with integrated wound closure features |
-
2020
- 2020-08-06 CN CN202010784013.8A patent/CN111887950A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0649634A1 (en) * | 1993-10-26 | 1995-04-26 | Ethicon Endo-Surgery | Trocar with a retractable cannula |
| US5464011A (en) * | 1994-10-24 | 1995-11-07 | Bridge; Robert S. | Tracheostomy tube |
| US5957888A (en) * | 1995-10-10 | 1999-09-28 | United States Surgical Corporation | Surgical cannula having a variable length |
| US5882344A (en) * | 1995-10-18 | 1999-03-16 | Stouder, Jr.; Albert E. | Adjustable length cannula and trocar |
| US20050096507A1 (en) * | 2003-10-30 | 2005-05-05 | Prosek Michael U. | Adjustable length cannula |
| US20060200186A1 (en) * | 2005-03-04 | 2006-09-07 | Marchek Connie P | Adjustable access device for surgical procedures |
| US20130006184A1 (en) * | 2008-10-13 | 2013-01-03 | Applied Medical Resource Corporation | Single port access system |
| US20100256453A1 (en) * | 2009-04-02 | 2010-10-07 | Tyco Healthcare Group Lp | Access portal including sponge |
| CN105832282A (en) * | 2010-09-19 | 2016-08-10 | 意昂外科有限公司 | Micro laparoscopy devices and improvement thereof |
| CN103591096A (en) * | 2013-10-12 | 2014-02-19 | 苏州市吴中区曙光铜管厂 | Telescopic copper pipe component |
| CN108290033A (en) * | 2015-11-25 | 2018-07-17 | 拜耳医药保健有限公司 | Syringe and connector system |
| CN205359512U (en) * | 2016-01-14 | 2016-07-06 | 赵文博 | Marrow puncture needle |
| CN109069185A (en) * | 2016-04-01 | 2018-12-21 | 伊西康有限责任公司 | Surgical access device with integrated wound closure features |
| CN107095707A (en) * | 2017-06-03 | 2017-08-29 | 成都五义医疗科技有限公司 | A kind of puncture outfit casing tube component with air bag |
| CN108938056A (en) * | 2018-08-01 | 2018-12-07 | 张云峰 | A kind of scalable fixed hysteroscope puncture outfit |
Non-Patent Citations (1)
| Title |
|---|
| 徐兵: "《机械装配技术》", 31 August 2014, 中国轻工业出版社 * |
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