CN203539415U - Puncture device with better sealing performance - Google Patents
Puncture device with better sealing performance Download PDFInfo
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- CN203539415U CN203539415U CN201320617748.7U CN201320617748U CN203539415U CN 203539415 U CN203539415 U CN 203539415U CN 201320617748 U CN201320617748 U CN 201320617748U CN 203539415 U CN203539415 U CN 203539415U
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Abstract
The utility model relates to a puncture device with better sealing performance. An elastic sealing element of the puncture device comprises a conical surface thin wall part and an annular part, wherein the conical surface thin wall part is in a conical shape, the annular part is connected with the bottom of the conical surface thin wall part, a fan-shaped notch is formed in the conical surface thin wall part, the wall thickness of at least the top end edge on the edge of the fan-shaped notch is smaller than that of the rest parts of the conical surface thin wall part, and/or the wall thickness from the bottom to the top end of the conical surface thin wall part is gradually reduced in a region, at least corresponding to the fan-shaped notch, on the conical surface thin wall part. The puncture device has the advantages that the wall thickness of at least the top end edge on the edge of the fan-shaped notch is thinner, the top end edge is favorably and tightly wrapped and pasted on a puncture rod or other operative instruments, the tension of the top end edge on a plurality of elastic sealing elements is favorably distributed uniformly, and the condition of protection of the individual top end edge caused by nonuniform tension distribution is avoided, so better wrapping performance and air tightness are realized.
Description
Technical field
This utility model relates to a kind of Minimally Invasive Surgery apparatus, particularly relates to the good perforator of the sealing property of using in laparoscopic surgery.
Background technology
Perforator is a kind ofly to pierce through stomach wall and for other operating theater instruments provide the operating theater instruments that enters body cavity passage, belong to a kind of Minimally Invasive Surgery apparatus.
Perforator generally includes as the sleeve assembly of other operating theater instruments admission passages with through the puncturing lever in described sleeve assembly.For transdermal, first with scalpel, cut epiderm skin, then puncturing lever transdermal enter body cavity.By the near-end to described puncturing lever, exert pressure, promote the tip of described puncturing lever through skin, until perforator enters body cavity, extract puncturing lever out, sleeve assembly just can be used as the mis instruments passage of carrying out endo-surgical and splanchnoscopy operation.
Sleeve assembly is used for various apparatuses and instrument to introduce intraperitoneal, and provides aeration to make stomach wall be elevated to organ top.At this class intra-operative, by sleeve assembly, insert sniffer (for example, endoscope or peritoneoscope), to allow surgeon to observe operation process in the external monitor that is connected to sniffer.
At intra-operative, for stoping intraperitoneal Leakage Gas, prior art has adopted a kind of perforator, and the top of its sleeve assembly has a housing, is provided with instrument black box in this housing, it comprises a pair of stiffening ring, and multiple separate be pressed in this to ring between flexible seals, each elastic sealing element has the circumference of 180 ° to 270 ° and builds up together each other layer, to form conical sealing member, and be suitable for the operating theater instruments of black box described in hermetically passing, to stop intraperitoneal Leakage Gas.
Above-mentioned the deficiencies in the prior art part is: the sealing property of above-mentioned black box is lower, and when outside intraperitoneal, draught head is greater than 4KPa, gas leakage obviously; Meanwhile, when 2KPa, also there is the situation of chronic leakage in draught head outside intraperitoneal.
Utility model content
Technical problem to be solved in the utility model is to provide the good perforator of sealing property between a kind of simple in structure, black box and operating theater instruments.
In order to address the above problem, this utility model provides a kind of perforator, comprising: black box, and sealing assembly comprises multiple elastic sealing elements; Each elastic sealing element comprises: be conical conical surface thinner wall section and the ring part that is connected to this conical surface thinner wall section bottom; Conical surface thinner wall section is provided with sector notch, and the top of this sector notch is the top of described conical surface thinner wall section, and curved angle; As the first scheme, the wall thickness of the tip edge of at least described sector notch on described sector notch edge is less than the remainder of described conical surface thinner wall section; The wall thickness of the remainder of described conical surface thinner wall section is consistent.Or, as first scheme, in described conical surface thinner wall section at least in the region relative with described sector notch, from conical surface thinner wall section bottom to the wall thickness on top by thick attenuation gradually.
Above-mentioned first scheme can be implemented on the basis of above-mentioned the first scheme, forms the third scheme.
Above-mentioned first or the third scheme in the specific implementation, on the outward flange of described sector notch or at least, on the outward flange on described top, there is chamfering, so that the wall thickness of at least described tip edge is less than the remainder of described conical surface thinner wall section.Described edge can be also the edge that even thickness, wall thickness are thinner than the remainder of described conical surface thinner wall section.
On the basis of above-mentioned each scheme, preferred scheme is, the outer wall of described conical surface thinner wall section be provided with at least one with ring stiffener or the band of the coaxial distribution of this conical surface thinner wall section, this reinforcement or be with at described sector notch place and there is corresponding breach.Ring stiffener or annular reinforcing band, can prevent from inserting black box and occurring that indivedual elastic sealing elements are stressed when excessive in puncturing lever or other operating theater instruments, described ring stiffener or band can be controlled the deflection of above-mentioned indivedual elastic sealing elements, prevent its excessive deformation and damage, increasing the tear resistance of conical surface thinner wall section.In addition,, with ring stiffener or the band of the coaxial distribution of described conical surface thinner wall section, be beneficial to the sealing property improving between elastic sealing element adjacent, lamination each other.
On the basis of above-mentioned first scheme, preferred scheme is, in described whole conical surface thinner wall section, from conical surface thinner wall section bottom to the wall thickness on top by thick attenuation gradually (wall thickness of conical surface thinner wall section bottom be close on its top end 1.5-3 doubly), the shape of above-mentioned elastic sealing element, structure, in conjunction with the attenuation mode gradually of wall thickness, be suitable for making the gluing, sealing between the elastic sealing element of adjacent laminating tightr, make the stress reasonable layout in described conical surface thinner wall section, to prevent local eminence, there is gas leakage or sepage, to be further beneficial to described conical surface thinner wall section, be closely wrapped in puncturing lever or other operating theater instruments, further improve parcel and the air-tightness between black box and puncturing lever or other operating theater instruments.
On the basis of above-mentioned each scheme, further preferred: the bottom of the conical surface thinner wall section of each elastic sealing element has the circumference that is not less than 180 °, or the circumference of 300 ° to 340 °.The tip edge of described sector notch is circular arc; Described ring part is provided with the base breach relative with described sector notch; The width of this base breach is less than the bottom width of described sector notch, and base breach is the central authorities to described sector notch just, with in the bottom circumference of conical surface thinner wall section of fixing each elastic sealing element, fix as far as possible the position of the radial edges of the sector notch of each elastic sealing element, guarantee sector notch on the adjacent elastic sealing element of lamination enough angles that can stagger, avoid producing leakage path between adjacent sector notch, finally guaranteed the sealing between adjacent elastic sealing element.
On the basis of above-mentioned each scheme, further preferred scheme is: this perforator also comprises: sleeve assembly, and described black box is located in the housing at this sleeve assembly top; Described black box also comprises a pair of stiffening ring, and each elastic sealing element is located at this between ring; The ring part of each elastic sealing element builds up layer each other together, so that the conical surface thinner wall section of each elastic sealing element forms conical sealing member, and then makes to coordinate with sealing assembly movable sealing through the operating theater instruments of described black box.The housing at described sleeve assembly top comprises: switch cap and receiver that upper-lower seal coordinates; Described black box is located on the service aisle in switch cap.
On the basis of above-mentioned each scheme, described receiver comprises: bowl bodies, be longitudinally connected to this bowl bodies bottom center and be fixed on the annular cover plate at this bowl bodies top, and be located at the plug valve on this bowl bodies sidewall with the cylindrical shell of this bowl bodies one, sealing; Plug valve is for allowing and stoping perfusion of fluid to be entered or discharged body cavity by cylindrical shell; On the lateral wall of described annular cover plate, be evenly distributed with at least two for the mounting groove of three-back-shaped snap close is set; The medial wall of three-back-shaped snap close is provided with spring; On the end face of described annular cover plate, be distributed with the interface with described mounting groove up/down perforation; The bottom of described switch cap is extended with multiple for inserting respectively the dead bolt of described interface downwards, the inner side of this dead bolt has locked groove, after this dead bolt is successively through the through hole on described interface, three-back-shaped snap close, under the effect of described spring, described locked groove secure fit is in the through hole of described three-back-shaped snap close, and then it is fixing that switch cap and receiver are patched.
On the basis of above-mentioned each scheme, the service aisle in the bowl bodies of described receiver is provided with air shuttle valve; This air shuttle valve comprises the inner cup portion that elastomeric material is made, and the bottom surface of this inner cup portion is plane, and these bottom surface central authorities are provided with cross-formed slits; The sidewall of this inner cup portion is provided with four relative with four angles of described cross-formed slits respectively arcuate grooves; Described operating theater instruments is suitable for through described cross-formed slits, and the bottom surface of this inner cup portion is suitable for sealing described service aisle when not having operating theater instruments to pass, and prevents from being thus delivered to by plug valve, cylindrical shell the leaking of perfusion gas of body cavity.
During use, the gas pressure in inner cup portion is on four arcuate grooves and push four angles of described cross-formed slits, makes described cross-formed slits closure when not having operating theater instruments to pass, and then sealing; When operating theater instruments is passed described cross-formed slits, described service aisle is realized sealing by described black box.Underrun cross-formed slits and the cylindricality operating theater instruments of this inner cup portion are slidably matched, and with respect to the slit type structure of duck-beak type air shuttle valve, material deformation is little, and the resistance acting on accordingly in operating theater instruments reduces.
The degree of depth of each arcuate groove, increases from top to bottom gradually, so that it is better to push the action effect of pressure of four angles of described cross-formed slits, and then improves sealing effectiveness.Described four arcuate groove centrosymmetry distribute, so that it is even to push the pressure of four angles of described cross-formed slits.
Further preferred scheme is: the top of described inner cup portion has integrated flange, this flange is for coordinating with the center through hole of annular cover plate and the sealed bottom of switch cap of described receiver, so that described switch cap coordinates with receiver upper-lower seal.
Further preferred scheme is: this perforator also comprises that this puncturing lever comprises the rod body part of ABS material and is connected to the head of the PC material of this rod body part end through the puncturing lever in described sleeve assembly.With respect to adopting metal rod body part, the utlity model has with low cost, simple process, the higher feature of safety.
This utility model has positive effect with respect to prior art:
(1) perforator of the present utility model is with respect to prior art, and in described conical surface thinner wall section, without strengthening pad part, corresponding production technology is easier, materials are less; In addition, in prior art elastic sealing element, the most easily there is the position of gas leakage or sepage, be in the tip edge of described sector notch.In this utility model, the wall thickness of at least described tip edge on described sector notch edge is thinner, the air pressure that intraperitoneal is larger is suitable for pushing described tip edge, being beneficial to described tip edge closely wraps up, is fitted in puncturing lever or other operating theater instruments, and the even tension that is beneficial to the tip edge on described multiple elastic sealing element distributes, avoid occurring because tension distribution is uneven that the situation of protuberance occurs indivedual tip edge, therefore has better parcel and air-tightness; Through emulation experiment, even if the difference of Intraabdominal air pressure and ambient pressure reaches 8KPa, there is not the situation (5 minutes, intraperitoneal external differential amplitude of variation is in 5%) of obvious gas leakage or sepage yet.At intraperitoneal external differential, reach 4KPa, also do not have the situation (be in half an hour, intraperitoneal external differential amplitude of variation is in 5%) of chronic leakage or sepage.
(2) in the black box of perforator of the present utility model, the bottom of the conical surface thinner wall section of elastic sealing element has the circumference that is not less than 180 °, is preferably not less than 270 °; When adopting the circumference of 300 ° to 340 °, correspondingly, on described elastic sealing element, sector notch is just less, the technique effect of its corresponding generation is: when operation, operating theater instruments is through after described black box, and the radial edges parcel of the sidewall of operating theater instruments and the sector notch of each elastic sealing element is tightr, and then improves sealing property, even if the outer draught head of intraperitoneal reaches 8.5KPa, there is not the situation of obvious gas leakage yet.In addition, if the bottom circumference of the conical surface thinner wall section of described elastic sealing element is greater than 340 °, can cause operating theater instruments to insert difficulty, cause the radial edges modification of sector notch of described elastic sealing element larger simultaneously, and then affect the sealing between the adjacent elastic sealing element of lamination.If the bottom circumference of the conical surface thinner wall section of described elastic sealing element is less than 300 °, the parcel power of the radial edges of the sidewall of operating theater instruments and the sector notch of each elastic sealing element dies down gradually;
(3) housing at sleeve assembly of the present utility model top comprises: switch cap and receiver that upper-lower seal coordinates; With respect to integrative-structure, the advantage of this Split type structure: be beneficial in operation process, change in time or cleaning switch cap according to practical situation; Meanwhile, in operation process, can clear up the bowl bodies of receiver.In addition,, once one of switch cap and receiver are damaged, remaining parts can be organized perforator with another and be used in conjunction with, and are beneficial to saving; Switch cap of the present utility model and receiver patch fit structure, have easy to use, the feature that reliability is higher;
(4) the bottom surface central authorities of air shuttle valve of the present utility model are provided with cross-formed slits; The sidewall of this inner cup portion is provided with four relative with four angles of described cross-formed slits respectively arcuate grooves; During use, gas pressure in inner cup portion is on four arcuate grooves and push four angles of described cross-formed slits, when not having operating theater instruments to pass, make described cross-formed slits closure, and then seal when operating theater instruments is passed described cross-formed slits, described service aisle is realized sealing by described black box.
Accompanying drawing explanation
In order to clearly demonstrate innovative principle of the present utility model and the technical advantage than existing product thereof, by means of accompanying drawing, by the limiting examples of the described principle of application, a possible embodiment is described below.In the drawings:
Figure 1A is the structural representation of perforator of the present utility model;
Figure 1B is the top view of perforator of the present utility model;
Fig. 1 C is the A-A sectional structure chart of the perforator in Figure 1A;
Fig. 1 D is the B-B sectional structure chart of the perforator in Figure 1A;
Fig. 1 E is the axonometric chart of perforator of the present utility model;
Fig. 1 F is the sectional structure chart of the housing parts of perforator of the present utility model;
Fig. 1 G is the switch cap sectional structure chart in perforator of the present utility model;
Fig. 2 is the decomposition texture schematic diagram of perforator of the present utility model;
Fig. 3 A is the top view of receiver of the present utility model;
Fig. 3 B is the C-C sectional structure chart of receiver of the present utility model;
Fig. 3 C is the D-D sectional structure chart of receiver of the present utility model;
Fig. 4 A is the structural representation of air shuttle valve of the present utility model;
Fig. 4 B is the right view of the air shuttle valve in Fig. 4 A;
Fig. 4 C is the axonometric chart of the air shuttle valve in Fig. 4 A;
Fig. 4 D is the left view of the air shuttle valve in Fig. 4 A;
Fig. 5 A is the structural representation of elastic sealing element of the present utility model;
Fig. 5 B is the upward view of the elastic sealing element in Fig. 5 A;
Fig. 5 C is the axonometric chart of the elastic sealing element in Fig. 5 A;
Fig. 5 D is the E-E cross-sectional view of the elastic sealing element in Fig. 5 B;
Fig. 5 E is another structural representation of the E-E section of the elastic sealing element in Fig. 5 B;
Fig. 6 A is the structural representation of another kind of elastic sealing element of the present utility model;
Fig. 6 B is the top view of Fig. 6 A;
Fig. 7 A is the structural representation of the third elastic sealing element of the present utility model;
Fig. 7 B is the top view of Fig. 7 A;
Fig. 8 is the structural representation of the 4th kind of elastic sealing element of the present utility model.
The specific embodiment
Embodiment 1
See Fig. 1 to 4, the perforator of the present embodiment, comprising: sleeve assembly 1, and the housing 2 at this sleeve assembly top comprises: switch cap 2-1 and receiver 2-2 that upper-lower seal coordinates; Described receiver 2-2 comprises: bowl bodies 2-20, be longitudinally connected to this bowl bodies 2-20 bottom center and be fixed on the annular cover plate 2-22 at this bowl bodies 2-20 top, and be located at the plug valve 4 on this bowl bodies 2-20 sidewall with the cylindrical shell 2-21 of this bowl bodies 2-20 one, sealing.This plug valve 4 is for allowing and stoping perfusion of fluid to enter or discharge body cavity by cylindrical shell 2-21;
The central axis of switch cap 2-1 and receiver 2-2 is provided with the service aisle 10 for wearing operating theater instruments or puncturing lever; One black box 3 is located on the service aisle in switch cap 2-1, and black box 3 tops are provided with protector 6.
As Fig. 2, Fig. 5 A to 5C, described black box 3 comprises a pair of stiffening ring 3-1, and 3 to 6 (preferably 4) are located at this to the elastic sealing element 3-2 between ring 3-1; Each elastic sealing element 3-2 comprises: be conical conical surface thinner wall section 3-21 and the ring part 3-22 that is connected to this conical surface thinner wall section 3-21 bottom; Conical surface thinner wall section 3-21 is provided with sector notch 3-20, and the top of this sector notch 3-20 is the tip edge 3-24 of described conical surface thinner wall section 3-21, and the ring part 3-22 of each elastic sealing element 3-2 builds up layer each other together, so that the conical surface thinner wall section 3-21 of each elastic sealing element 3-2 forms conical sealing member, and then make to coordinate with sealing assembly 3 movable sealings through the operating theater instruments of described black box 3; The bottom of the conical surface thinner wall section of each elastic sealing element 3-2 has the circumference of 300 ° to 340 ° (preferably 320 °).
Described ring part 3-22 is provided with base breach 3-220 relative with described sector notch 3-20 and that connect; Described ring part 3-22 is also uniformly distributed the hole 3-23 being useful on the pin being located on described a pair of stiffening ring 3-1, to fix each elastic sealing element 3-2.
As Fig. 5 A, the width of described base breach 3-220 is less than the bottom width of described sector notch 3-20, and the just central authorities to described sector notch 3-20 of base breach 3-220, with in the bottom circumference of conical surface thinner wall section of fixing each elastic sealing element 3-2, fix as far as possible the position of the radial edges of the sector notch 3-20 of each elastic sealing element 3-2, guarantee sector notch 3-20 on the adjacent elastic sealing element 3-2 of lamination enough angles that can stagger, avoid producing leakage path between adjacent sector notch 3-20, finally guaranteed the sealing between adjacent elastic sealing element 3-2.
On described sector notch 3-20 edge or be at least the remainder that the wall thickness of described tip edge 3-24 is less than described conical surface thinner wall section 3-21.The wall thickness of the remainder of described conical surface thinner wall section 3-21 is consistent; During concrete enforcement, on the outward flange of described sector notch 3-20 or described tip edge 3-24(as Fig. 5 D) and/or the outward flange 3-30 of contiguous this tip edge 3-24 on there is chamfering 3-29(as Fig. 5 E), so that the thinnest part of the wall thickness of described respective outer edges is below 1/2 of remainder of described conical surface thinner wall section.
As the optional scheme of another kind, described tip edge can be also the edge that even thickness, wall thickness are thinner than the remainder of described conical surface thinner wall section 3-21, the thickness of this tip edge be described conical surface thinner wall section remainder 1/2 to 1/4.
The technique effect of its corresponding generation is: sector notch less (bottom that is the conical surface thinner wall section of each elastic sealing element 3-2 has the circumference of 300 ° to 340 °) on the described elastic sealing element of the present embodiment, when operation, operating theater instruments is through after described black box 3, the radial edges parcel of the sector notch 3-20 of the sidewall of operating theater instruments and each elastic sealing element 3 is tightr, and then improves sealing property; In addition,, with respect to prior art, in described conical surface thinner wall section, without strengthening pad part, corresponding production technology is easier, materials are less; In addition, in prior art elastic sealing element, the most easily there is the position of gas leakage or sepage, be in the described tip edge of described sector notch.In the present embodiment, the edge wall thickness of described sector notch is thinner, or the wall thickness of at least described tip edge is thinner, the air pressure that intraperitoneal is larger is suitable for pushing described tip edge, being beneficial to described tip edge wraps up more closely, is fitted in puncturing lever or other operating theater instruments, and the even tension that is beneficial to the tip edge on described multiple elastic sealing element distributes, avoid occurring because tension distribution is uneven that the situation of protuberance occurs indivedual tip edge, therefore has better parcel and air-tightness; Through emulation experiment, even if the outer draught head of intraperitoneal reaches 8KPa, there is not the situation (5 minutes, intraperitoneal external differential amplitude of variation is in 5%) of obvious gas leakage or sepage yet.At intraperitoneal external differential, reach 4KPa, also do not have the situation (be half an hour, intraperitoneal external differential amplitude of variation is in 5%) of chronic leakage or sepage.
As Fig. 2, on the lateral wall of described annular cover plate 2-22, be evenly distributed with at least two for the mounting groove 2-26 of three-back-shaped snap close 2-23 is set; The medial wall of three-back-shaped snap close 2-23 is provided with spring 2-24; On the end face of described annular cover plate 2-22, be distributed with the interface 2-25 with described mounting groove 2-26 up/down perforation; The bottom of described switch cap 2-1 is extended with multiple for inserting respectively the dead bolt 2-11 of described interface 2-25 downwards, the inner side of this dead bolt 2-11 has locked groove 2-12, after this dead bolt 2-11 is successively through the through hole 2-27 on described interface 2-25, three-back-shaped snap close 2-23, under the effect of described spring 2-24, described locked groove 2-12 secure fit is in the through hole 2-27 of described three-back-shaped snap close 2-23.
As Fig. 4, the service aisle in the bowl bodies 2-20 of described receiver 2-2 is provided with air shuttle valve 7; This air shuttle valve 7 comprises the inner cup portion 71 that elastomeric material is made, and the bottom surface 72 of this inner cup portion 71 is plane, and these bottom surface 72 central authorities are provided with cross-formed slits 73; The sidewall of this inner cup portion 71 is provided with four relative with four angles of described cross-formed slits respectively arcuate grooves 74; Described operating theater instruments is suitable for through described cross-formed slits 73, and the bottom surface 72 of this inner cup portion is suitable for sealing described service aisle 10 when not having operating theater instruments to pass, and prevents from being thus delivered to leaking of endoceliac perfusion gas by plug valve 4, cylindrical shell 2-21.
During use, gas pressure in inner cup portion 71 is on four arcuate grooves 74 and push four angles of described cross-formed slits 73, when not having operating theater instruments to pass, make described cross-formed slits 73 closures, and then seal when operating theater instruments is passed described cross-formed slits 73, described service aisle is realized sealing by described black box 3.Elastic sealing element 3-2 and air shuttle valve 7 adopt rubber to make.
The top of described inner cup portion 71 has integrated flange 75, this flange 75 is for coordinating with the center through hole of annular cover plate 2-22 and the sealed bottom of switch cap 2-1 of described receiver 2-2, so that described switch cap 2-1 coordinates with receiver 2-2 upper-lower seal.
This perforator also comprises through the puncturing lever in described sleeve assembly, and this puncturing lever comprises the rod body part of ABS material and is connected to the head of the PC material of this rod body part end.With respect to adopting metal rod body part, the utlity model has with low cost, simple process, the higher feature of safety.
With respect to integrative-structure, housing 22 of the present utility model adopts Split type structure, is beneficial in operation process, according to practical situation, changes in time or cleaning switch cap 2-1; Meanwhile, in operation process, can clear up the bowl bodies 2-20 of receiver 2-2.In addition,, once one of switch cap 2-1 and receiver 2-2 are damaged, remaining parts can be organized perforator with another and be used in conjunction with, and are beneficial to saving.
On the basis of embodiment 1, there is following modification in the present embodiment:
As Fig. 6 A and 6B, the outer wall of described conical surface thinner wall section 3-21 is provided with the ring stiffener 3-25 of the coaxial distribution of this conical surface thinner wall section and 3-26(as Fig. 6 A and 6B), or the outer wall of described conical surface thinner wall section 3-21 is provided with the annular reinforcing band 3-27(of the coaxial distribution of this conical surface thinner wall section as Fig. 7 A and 7B), this reinforcement or be with at described sector notch place and there is corresponding breach.
Ring stiffener or annular reinforcing band can make conical surface thinner wall section be wrapped in more closely in puncturing lever or other operating theater instruments, also there is better parcel, even if there is local eminence in the remainder of described conical surface thinner wall section, do not affect air-tightness, make the air-tightness between black box and puncturing lever or other operating theater instruments better yet; In addition, ring stiffener or annular reinforcing band, can prevent from inserting black box and occurring that indivedual elastic sealing elements are stressed when excessive in puncturing lever or other operating theater instruments, described ring stiffener or band can be controlled the deflection of above-mentioned indivedual elastic sealing elements, prevent its excessive deformation and damage, increasing the tear resistance of conical surface thinner wall section.
In addition,, with ring stiffener or the band of the coaxial distribution of described conical surface thinner wall section, be beneficial to the sealing property improving between elastic sealing element adjacent, lamination each other.
Through emulation experiment, even if the outer draught head of intraperitoneal reaches 8.5KPa, there is not the situation (5 minutes, intraperitoneal external differential amplitude of variation is in 5%) of obvious gas leakage or sepage in described black box yet.At intraperitoneal external differential, reach 5KPa, also do not have the situation (be in half an hour, intraperitoneal external differential amplitude of variation is in 5%) of chronic leakage or sepage.
On the basis of embodiment 1 or 2, there is following modification in the present embodiment:
As Fig. 8, it comprises described tip edge 3-24 the region 3-28(relative with described sector notch 3-20 on described conical surface thinner wall section 3-21), from the wall thickness on bottom to the top of conical surface thinner wall section 3-21 by thick attenuation gradually (wall thickness of conical surface thinner wall section bottom be close on its top end 1.5-3 doubly), the bottom of the wall thickness of the remainder of described conical surface thinner wall section 3-21 and conical surface thinner wall section 3-21 consistent, this structure is suitable for preventing local eminence, being beneficial to described conical surface thinner wall section entirety is closely wrapped in puncturing lever or other operating theater instruments, to improve the air-tightness between black box and puncturing lever or other operating theater instruments.
The thickness transition of the remainder of described region 3-28 and described conical surface thinner wall section 3-21 is gradual change, level and smooth, this structure is beneficial to the tight entirety of described conical surface thinner wall section and is wrapped in puncturing lever or other operating theater instruments, further improves the air-tightness between black box and puncturing lever or other operating theater instruments.
Through emulation experiment, even if the outer draught head of intraperitoneal reaches 8.5KPa, there is not the situation (5 minutes, intraperitoneal external differential amplitude of variation is in 5%) of obvious gas leakage or sepage in described black box yet.At intraperitoneal external differential, reach 5KPa, also do not have the situation (be half an hour, intraperitoneal external differential amplitude of variation is in 5%) of chronic leakage or sepage.
On the basis of embodiment 1 or 2, there is following modification in the present embodiment:
As Fig. 8, on described conical surface thinner wall section 3-21, from the wall thickness entirety on bottom to the top of conical surface thinner wall section 3-21 by thick attenuation gradually (wall thickness of conical surface thinner wall section bottom be close on its top end 1.5-3 doubly), the shape of elastic sealing element 3-2, structure, in conjunction with the gradual manner of wall thickness, be suitable for making the gluing, sealing between the elastic sealing element 3-2 of adjacent laminating tightr, prevent local eminence and gas leakage or sepage occur, be beneficial to described conical surface thinner wall section entirety is wrapped in puncturing lever or other operating theater instruments simultaneously more closely, to improve the air-tightness between black box and puncturing lever or other operating theater instruments.
Through emulation experiment, even if the outer draught head of intraperitoneal reaches 8.8KPa, there is not the situation (5 minutes, intraperitoneal external differential amplitude of variation is in 5%) of obvious gas leakage or sepage in described black box yet.At intraperitoneal external differential, reach 5.2KPa, also do not have the situation (be half an hour, intraperitoneal external differential amplitude of variation is in 5%) of chronic leakage or sepage.
Obviously, above-described embodiment is only for this utility model example is clearly described, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all embodiments.And these belong to apparent variation that spirit of the present utility model extended out or variation still among protection domain of the present utility model.
Claims (10)
1. a perforator, comprises black box, and sealing assembly comprises multiple elastic sealing elements; Each elastic sealing element comprises: be conical conical surface thinner wall section and the ring part that is connected to this conical surface thinner wall section bottom; Conical surface thinner wall section is provided with sector notch, and the top of this sector notch is the top of described conical surface thinner wall section; It is characterized in that:
The wall thickness of the tip edge of at least described sector notch on described sector notch edge is less than the remainder of described conical surface thinner wall section;
And/or, in described conical surface thinner wall section at least in the region relative with described sector notch, from conical surface thinner wall section bottom to the wall thickness on top by thick attenuation gradually.
2. perforator according to claim 1, is characterized in that: on the outward flange of described sector notch or at least, on the outward flange on described top, have chamfering, so that the wall thickness of at least described tip edge is less than the remainder of described conical surface thinner wall section.
3. perforator according to claim 1, is characterized in that: the outer wall of described conical surface thinner wall section be provided with at least one with ring stiffener or the band of the coaxial distribution of this conical surface thinner wall section, this reinforcement or be with at described sector notch place and there is corresponding breach.
4. perforator according to claim 1, is characterized in that: in described conical surface thinner wall section, from conical surface thinner wall section bottom to the wall thickness on top by thick attenuation gradually.
5. perforator according to claim 1, is characterized in that: the bottom of the conical surface thinner wall section of each elastic sealing element has the circumference of 300 ° to 340 °;
The tip edge of described sector notch is circular arc; Described ring part is provided with the base breach relative with described sector notch; The width of this base breach is less than the bottom width of described sector notch, and the just central authorities to described sector notch of base breach.
6. according to the perforator one of claim 1-5 Suo Shu, it is characterized in that: this perforator also comprises: sleeve assembly, described black box is located in the housing at this sleeve assembly top; Described black box also comprises a pair of stiffening ring, and each elastic sealing element is located at this between ring; The ring part of each elastic sealing element builds up layer each other together, so that the conical surface thinner wall section of each elastic sealing element forms conical sealing member, and then makes to coordinate with sealing assembly movable sealing through the operating theater instruments of described black box;
The housing at described sleeve assembly top comprises: switch cap and receiver that upper-lower seal coordinates; Described black box is located on the service aisle in switch cap.
7. perforator according to claim 6, it is characterized in that: described receiver comprises: bowl bodies, be longitudinally connected to this bowl bodies bottom center and be fixed on the annular cover plate at this bowl bodies top, and be located at the plug valve on this bowl bodies sidewall with the cylindrical shell of this bowl bodies one, sealing; Plug valve is for allowing and stoping perfusion of fluid to be entered or discharged body cavity by cylindrical shell;
On the lateral wall of described annular cover plate, be evenly distributed with at least two for the mounting groove of three-back-shaped snap close is set; The medial wall of three-back-shaped snap close is provided with spring;
On the end face of described annular cover plate, be distributed with the interface with described mounting groove up/down perforation;
The bottom of described switch cap is extended with multiple for inserting respectively the dead bolt of described interface downwards, the inner side of this dead bolt has locked groove, after this dead bolt is successively through the through hole on described interface, three-back-shaped snap close, under the effect of described spring, described locked groove secure fit is in the through hole of described three-back-shaped snap close.
8. perforator according to claim 7, is characterized in that: the service aisle in the bowl bodies of described receiver is provided with air shuttle valve; This air shuttle valve comprises the inner cup portion that elastomeric material is made, and the bottom surface of this inner cup portion is plane, and these bottom surface central authorities are provided with cross-formed slits;
The sidewall of this inner cup portion is provided with four relative with four angles of described cross-formed slits respectively arcuate grooves; Described operating theater instruments is suitable for through described cross-formed slits, and the bottom surface of this inner cup portion is suitable for sealing described service aisle when not having operating theater instruments to pass, and prevents from being thus delivered to leaking of endoceliac perfusion gas by plug valve, cylindrical shell.
9. perforator according to claim 8, it is characterized in that: the top of described inner cup portion has integrated flange, this flange is for coordinating with the center through hole of annular cover plate and the sealed bottom of switch cap of described receiver, so that described switch cap coordinates with receiver upper-lower seal; This perforator also comprises through the puncturing lever in described sleeve assembly, and this puncturing lever comprises the rod body part of ABS material and is connected to the head of the PC material of this rod body part end.
10. perforator according to claim 8, is characterized in that: described four arcuate groove centrosymmetry distribute, and the degree of depth of each arcuate groove, increase gradually from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320617748.7U CN203539415U (en) | 2013-09-30 | 2013-09-30 | Puncture device with better sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320617748.7U CN203539415U (en) | 2013-09-30 | 2013-09-30 | Puncture device with better sealing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203539415U true CN203539415U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320617748.7U Expired - Fee Related CN203539415U (en) | 2013-09-30 | 2013-09-30 | Puncture device with better sealing performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203539415U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103505270A (en) * | 2013-09-30 | 2014-01-15 | 常州市新能源吻合器总厂有限公司 | Puncture outfit good in sealing property |
| CN104068921A (en) * | 2014-06-26 | 2014-10-01 | 浙江天松医疗器械股份有限公司 | Puncture outfit |
| CN104083194A (en) * | 2014-07-15 | 2014-10-08 | 山东威瑞外科医用制品有限公司 | Puncturing device |
| CN110141328A (en) * | 2019-06-19 | 2019-08-20 | 江苏格里特医疗科技有限公司 | A kind of sealing ring and multi-channel single-hole laparoscopic surgery puncture outfit |
| CN110495934A (en) * | 2019-09-20 | 2019-11-26 | 常州健瑞宝医疗器械有限公司 | Flake valve, puncture seal component and puncture outfit |
-
2013
- 2013-09-30 CN CN201320617748.7U patent/CN203539415U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103505270A (en) * | 2013-09-30 | 2014-01-15 | 常州市新能源吻合器总厂有限公司 | Puncture outfit good in sealing property |
| CN104068921A (en) * | 2014-06-26 | 2014-10-01 | 浙江天松医疗器械股份有限公司 | Puncture outfit |
| CN104083194A (en) * | 2014-07-15 | 2014-10-08 | 山东威瑞外科医用制品有限公司 | Puncturing device |
| CN110141328A (en) * | 2019-06-19 | 2019-08-20 | 江苏格里特医疗科技有限公司 | A kind of sealing ring and multi-channel single-hole laparoscopic surgery puncture outfit |
| CN110495934A (en) * | 2019-09-20 | 2019-11-26 | 常州健瑞宝医疗器械有限公司 | Flake valve, puncture seal component and puncture outfit |
| WO2021051815A1 (en) * | 2019-09-20 | 2021-03-25 | 常州健瑞宝医疗器械有限公司 | Fish eye valve, puncture sealing assembly, and puncture device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20190930 |