CN203790008U - Puncture outfit - Google Patents
Puncture outfit Download PDFInfo
- Publication number
- CN203790008U CN203790008U CN201420056916.4U CN201420056916U CN203790008U CN 203790008 U CN203790008 U CN 203790008U CN 201420056916 U CN201420056916 U CN 201420056916U CN 203790008 U CN203790008 U CN 203790008U
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- Prior art keywords
- perforator
- puncture
- sealed compartment
- casing
- holding portion
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- Expired - Lifetime
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- 238000007789 sealing Methods 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims description 24
- 230000007704 transition Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims description 3
- 210000003811 finger Anatomy 0.000 claims description 3
- 210000005224 forefinger Anatomy 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 210000002784 stomach Anatomy 0.000 description 9
- 238000002324 minimally invasive surgery Methods 0.000 description 5
- 210000000683 abdominal cavity Anatomy 0.000 description 4
- 239000013536 elastomeric material Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000007912 intraperitoneal administration Methods 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 108010022579 ATP dependent 26S protease Proteins 0.000 description 1
- 230000003187 abdominal effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model discloses a puncture outfit. The puncture outfit comprises a cannula, a sealed cabin and a puncture rod. The cannula comprises a near end containing part which is approximately of a bowl shape, a far end part and a barrel part located between the near end containing part and the far end part. The sealed cabin comprises an upper shell and a lower shell, wherein the upper shell and the lower shell are integrally connected. The puncture rod comprises a core rod and a near end part which is located at the near end of the core rod and allows a surgeon to hold. The stretching direction of the core rod limits the axial direction of the puncture outfit, the far end of the core rod is provided with a puncture head end for achieving the puncture function, the core rod penetrates through the barrel part of the cannula and the sealed cabin in a sealing mode when the puncture outfit is in an assembly state, and meanwhile the puncture head end of the core rod stretches out of the far end part of the cannula in a protruding mode. The puncture outfit is characterized in that the axial sizes of the near end containing part of the puncture cannula, the upper shell of the sealed cabin and the near end part of the puncture rod in the axial direction of the puncture outfit are respectively d1, d2 and d3, and d3 is set to be equal to or larger than 1/2 of the sum of d1, d2 and d3. When the puncture outfit is used, it can be prevented that the cannula and the sealed cabin of the puncture outfit are separated due to torque applied to the connection portion between the cannula and the sealed cabin of the puncture outfit by the surgeon.
Description
Technical field
This utility model relates to a kind of perforator, for the stomach wall that pierces through human body to set up the operating theater instruments access way for Wicresoft or surgical operation.
Background technology
In abdominal cavity inspection, abdominal operation and other Wicresofts or surgical operation, perforator is widely used.Perforator can be set up admission passage in the stomach wall of human body, to enter intraperitoneal for peritoneoscope or other operating theater instruments (as seal wire, conduit, filter, support etc.), checks or operation technique.
Perforator comprises puncturing lever and sealed compartment and sleeve pipe substantially.The sleeve pipe of perforator and sealed compartment use joining part (for example helicitic texture or buckle structure) to interconnect conventionally.Once after perforator was used, sealed compartment can be dropped together with sleeve pipe conventionally.Puncturing lever is recovered and disinfection, to use in other surgical operations afterwards or inspection.
Perforator being inserted into while removing from stomach wall in stomach wall or by perforator, perforator can be subject to the active force that surgical palm transmits.In some cases, perforator can be subject to the clockwise or counterclockwise torque that surgical palm transmits.Due to the normally helicitic texture of joining part between sleeve pipe and the sealed compartment of perforator, therefore perforator often can only bear the torque of (for example clockwise) of a direction.For example, in the time that perforator is subject to the torque of another rightabout (counterclockwise), the joining part between sleeve pipe and the sealed compartment of perforator is easy to unclamp.
Similarly, in the time that the joining part between sleeve pipe and the sealed compartment of perforator is buckle structure, the clockwise or counterclockwise torque that palm transmits also may make the sleeve pipe of perforator relative to each other separate with sealed compartment.
In addition, in existing perforator, CO
2the switching of the inlet passage of gas is to be controlled by a switch valve that is positioned at sealed compartment outside.Surgeon is easy to encounter because of carelessness or to open switch valve in the time using perforator to operate, and can cause so Intraabdominal CO
2gas leaks into outside via the switch valve of opening.
Therefore, wish very much to improve the dependency structure of perforator, to prevent that sleeve pipe and sealed compartment from unintentionally separating.
Utility model content
The purpose of this utility model is to provide a kind of perforator that can overcome above-mentioned defect, prevents that the puncture casing of perforator and sealed compartment are for example because surgeon is applied to torque on the joining part between puncture casing and the sealed compartment of perforator and separated from each other.
Further, can prevent alternatively the CO of perforator according to perforator of the present utility model
2be opened unintentionally Deng gas inlet passage switch valve, to guarantee Intraabdominal CO
2can not leak Deng gas.
According to an aspect, perforator of the present utility model comprises:
Puncture casing, it comprises and is roughly near-end holding portion, the distal portions of bowl type and is positioned at shell portion between the two;
Sealed compartment, it comprises upper casing and lower casing that one connects, described sealed compartment removably sealing is connected to the near-end holding portion of puncture casing, to make the lower casing of sealed compartment be accommodated in the near-end holding portion of puncture casing under the confined state of perforator and the upper casing of sealed compartment is exposed to the outside of the near-end holding portion of puncture casing;
Puncturing lever, it comprises the proximal part that core bar and the proximal end that is positioned at core bar grip for surgeon, the bearing of trend of described core bar defines the axial of perforator, core bar has the puncture head end for realizing puncture function at its far-end, and core bar the confined state seal performance of perforator run through the shell portion of puncture casing and sealed compartment, the puncturing head distal process of core bar stretches out the distal portions of puncture casing simultaneously outside;
It is characterized in that: the axial dimension of the near-end holding portion of the proximal part of puncturing lever, the upper casing of sealed compartment and puncture casing on the axial direction of perforator is respectively d1, d2, d3, and d3 is set equal to or is greater than 1/2 of d1, d2, d3 sum.
Preferably, d3 is set to be greater than 60% of d1, d2, d3 sum.
Preferably, d3 is set to be greater than 70% of d1, d2, d3 sum.
Preferably, the outer surface of the lower casing of described sealed compartment is formed with external thread structure, and the inner surface of the near-end holding portion of sleeve pipe is formed with internal thread hole; Meanwhile, under the confined state of perforator, the internal thread hole of the near-end holding portion of the external thread structure of the lower casing of sealed compartment and sleeve pipe engages, and between is provided with elastic sealing element.
Preferably, the near-end holding portion of puncture casing has non-slip feature portion at its circumferential wall place.
Preferably, on the upper casing of sealed compartment, be also provided with the breather valve of the switching of the gas passage for controlling perforator; And
The lever that described breather valve comprises valve body, is arranged in the spool within valve body and can rotates at valve body with movable valve plug, the upper casing of wherein said valve body and sealed compartment carries out one-body molded, described spool extends along being approximately perpendicular to the axial horizontal direction of perforator, and the bearing of trend of described lever is approximately perpendicular to the bearing of trend of spool.
Preferably, on the upper casing of sealed compartment, be also provided with the breather valve of the switching of the gas passage for controlling perforator; And
The lever that described breather valve comprises valve body, is arranged in the spool within valve body and can rotates at valve body with movable valve plug, the upper casing of wherein said valve body and sealed compartment carries out one-body molded, the bearing of trend of described spool is roughly in an acute angle with respect to the end face of sealed compartment, and the bearing of trend of described lever is approximately perpendicular to the bearing of trend of spool.
Preferably, be also provided with a locking system on described breather valve, it can lockedly can not drive valve core rotation with the lever that makes breather valve.
Preferably, on breather valve, be connected with the vent line for supply gas.
Preferably, the proximal part of puncturing lever is roughly umbrella-shaped structure or the flat-tope structure without cusp, together with the near-end holding portion of the proximal part of puncturing lever, the upper casing of sealed compartment and puncture casing, form the head of perforator, and smooth transition each other between adjacent two parts of the head of perforator.
Preferably, in the upper casing of sealed compartment, be formed with the circular passage of supplied gas stream process; The valve body of described breather valve is in close proximity to the upper casing of sealed compartment and one-body molded with it, forms a path in valve body simultaneously, and it is connected with described circular passage.
Preferably, the near-end holding portion of described puncture casing has dome type outer surface, and the shell portion of simultaneously adjacent with described near-end holding portion puncture casing has cylindrical outer surface; Described dome type outer surface and cylindrical outer surface are by the molding integratedly of identical material, and form a trumpet type outer surface, and then make surgeon to grip perforator by the mode that abuts against the proximal part of puncturing lever with its palm, pressing described trumpet type outer surface with its forefinger and middle finger to operate.
There is in use significant effect according to perforator of the present utility model, substantially can prevent that the puncture casing of perforator and sealed compartment are for example because surgeon is applied to torque on the joining part between puncture casing and the sealed compartment of perforator and separated from each other.And, can also prevent the CO of perforator according to perforator of the present utility model
2be opened unintentionally Deng gas inlet passage switch valve, to guarantee Intraabdominal CO
2can not leak Deng gas.
Other side of the present utility model, object and advantage will be by becoming more apparent below in conjunction with the detailed description of accompanying drawing.
Brief description of the drawings
Fig. 1 a shows according to the decomposing state figure of the perforator 1 of the first embodiment of the present utility model.
Fig. 1 b shows according to the assembled state axonometric chart of the perforator 1 of the first embodiment of the present utility model.
Fig. 1 c shows according to the assembled state front view of the perforator 1 of the first embodiment of the present utility model.
The axonometric chart of the sealed compartment 200 that Fig. 2 shows the perforator 1 shown in Fig. 1 in the time of confined state.
Fig. 3 a and Fig. 3 b show the axonometric chart from different two view in the time of decomposing state of the sealed compartment 200 shown in Fig. 2.
In different views, corresponding parts will represent with identical Reference numeral, and will omit the unnecessary description of these parts.
Detailed description of the invention
For convenience of description, " far-end " refers to perforator 1(or its building block in this application) in use from surgeon away from but near the one end in patient abdominal cavity, " near-end " refers to perforator 1 one end close to from surgeon in use.
As an example of the present utility model, comprise puncturing lever 100, sealed compartment 200 and puncture casing 300 according to the perforator 1 of the first embodiment of the present utility model.According to this utility model, sealed compartment 200 can be disposable use part, and puncturing lever 100 and sleeve pipe 300 can be reused after use after disinfecting.Structure, annexation and the function of puncturing lever 100, sealed compartment 200 and puncture casing 300 will be introduced respectively below.
puncturing lever 100
As shown in Figure 1a, the proximal part 120 that press for surgical palm the proximal end that puncturing lever 100 comprises core bar 110 and is positioned at core bar 110.Preferably, the core bar 110 of puncturing lever 100 and proximal part 120 are the integrative-structures by injection mo(u)lding.
According to this utility model, puncturing lever 100 can disinfection after using, to reuse in upper puncture procedure once, thereby does not belong to disposable use parts.
Under confined state, the length bearing of trend of the core bar 110 of puncturing lever 100 corresponding to perforator 1 axially, simultaneously perforator 1 be radially restricted to perpendicular to or be orthogonal to perforator 1 axially.
The proximal part 120 of puncturing lever 100 is roughly umbrella-shaped structure or the approximate flat-tope structures without cusp.The outer surface of proximal part 120 can smooth transition or is extended to the upper casing 210 of sealed compartment as described below 200.In the time using perforator 1 to carry out puncture procedure, the upper casing 210 of proximal part 120 and sealed compartment 200 abuts against surgical palm, to make roughly equally distributed power act on surgical palm with larger area.
The proximal part 120 of puncturing lever 100 axially has an axial dimension d1 along perforator 1, as shown in Fig. 1 c.Under the confined state of perforator 1, form the head 1a of perforator 1 together with the upper casing 210 of the proximal part 120 of puncturing lever 100 and sealed compartment 200 as described below, the near-end holding portion 310 of puncture casing 300.In the process of admission passage that is formed for Minimally Invasive Surgery apparatus, and in the process of operation Minimally Invasive Surgery apparatus, the head 1a that surgeon is grasping perforator 1 operates.Thrust, pulling force, clockwise direction torque or counterclockwise torque in this process will act on the head 1a of perforator 1.
The core bar 110 of puncturing lever 100 is elongated shape.The far-end of core bar 110 comprises the puncture head end 111 of passivity, and it is for example for piercing through patient's stomach wall and setting up admission passage.Preferably, the shape of puncture head end 111 is ball heads that diameter is about 1mm, instead of complete sharp-pointed tip.The puncture head end 111 of this shape can be realized the object that pierces through patient's stomach wall, can avoid again its hetero-organization of human body to damage.
In the time of assembling perforator 1, the core bar 110 of puncturing lever 100 moves towards far-end in the mode that runs through sealed compartment 200 and puncture casing 300, until the bottom of the proximal part 120 of puncturing lever 100 abuts against the proximal face of the upper casing 210 of sealed compartment as described below 200.The puncture head end 111 of core bar 110 projects into the outside of the far-end of puncture casing 300.Like this, the perforator 1 after assembling can pierce through patient's stomach wall and enter intraperitoneal in ensuing puncture procedure, forms the admission passage for Minimally Invasive Surgery apparatus.
sealed compartment 200
Sealed compartment 200 belongs to disposable use parts, will after using, can be dropped.As shown in Figure 2, sealed compartment 200 has upper casing 210 and lower casing 220.In the time manufacturing sealed compartment 200, first upper casing 210 and lower casing 220 are abutting against each other, then link together by ultrasonic bonding, and shape all-in-one-piece structure.
The upper casing 210 of sealed compartment 200 is shape for hat or cover type roughly.As shown in Fig. 3 a and 3b, upper casing 210 in the central part is formed with through hole 211, passes for the core bar 110 of puncturing lever 100.
Upper casing 210 has outer wall 213, and it axially has an axial dimension d2 along perforator 1, as shown in Figure 1.Under the confined state of perforator 1, the outer wall 213 of upper casing 210 will be exposed to outside, form the mid portion of the head 1a of perforator 1.
On the near-end inner side of upper casing 210, form interior circumferential wall 212.Described interior circumferential wall 212 is approximately perpendicular to the proximal face of upper casing 210, and extends towards the far-end of sealed compartment 200.In circumferentially wall 212 engage forming sealing with interior all flanges 229 of lower casing 220 as described below.The interior circumferential wall 212(of upper casing 210 and interior all flanges 229 of lower casing 220) and the medial surface of the outer wall 213 of upper casing 210 as described below, limit together an annular space or limit for CO
2the circular passage of gas flow process.
The outer surface of the outer wall 213 of upper casing 210 is with respect to axially slightly tapered the extension of perforator 1.On outer wall 213, be provided with valve body 214.In valve body 214, be provided with vent line 215.Vent line 215 and CO
2gas supply source (not shown) is connected, and for example will pass into Intraabdominal CO to supply
2gas.The situation of all parts being connected with vent line 215 will at length be introduced afterwards.
The lower casing 220 of sealed compartment 200 roughly becomes cylindrical shape.Lower casing 220 has periphery wall 221, and be integrally connected to periphery wall 221 and be positioned at its inner side peripheral outer lips 222, all flanges 229.Peripheral outer lips 222 is connected by multiple shorter ribs 223 that radially extend with interior all flanges 229, thereby between is formed with the multiple holes 224 along annular spread, so that CO
2gas can flow between vent line 215 and the far-end of sealed compartment 200.
On the lateral surface of the periphery wall 221 of lower casing 220, be formed with external thread structure 225, it is for being connected with puncture casing 300 as described below.Lower casing 220 also has end wall 226.Be formed with opening 227 at the middle body of end wall 226, to hold the extended portion 231 of the first sealing member 230 as described below.
Between upper casing 210 and lower casing 220, be provided with the first sealing member 230.The first sealing member 230 roughly becomes collar plate shape, and is provided with elastomer 233 at top.Described elastomer 233 is to be for example made up of elastomeric material.Be formed with the extended portion 231 of band bottom in the center of the first sealing member 230.Centre in the bottom of extended portion 231 is formed with through hole 232.Described through hole 232 coordinates forming sealing with the core bar 110 of the puncturing lever 100 through wherein.
In the process of assembling sealed compartment 200, the upper casing 210 of sealed compartment 200 and lower casing 220 be the shape all-in-one-piece structure by ultrasonic bonding for example.Meanwhile, by means of the first sealing member 230, between the medial surface of the outer wall 213 of interior all flanges 229 of the interior circumferential wall 212 of upper casing 210, lower casing 220, upper casing 210, formed for CO
2the seal passage of gas flow.CO
2gas, after vent line 215 and hole 224 flow into sealed compartment 200, flows into puncture casing 300 through above-mentioned seal passage, finally flows into patient's intraperitoneal.
Except upper casing 210, lower casing 220 and the first sealing member 230, sealed compartment 200 also has retainer 240 and the second sealing member 250.
As shown in Fig. 3 a and 3b, the global shape of retainer 240 is uncovered cylindrical shape.The neighboring of retainer 240 is formed with projection 241, and in projection 241, is formed with multiple internal thread holes 242.
In the time of assembling sealed compartment 200, the multiple pins 228 shown in Fig. 3 a run through the end wall 226 of lower casing 220, and are threaded onto in the internal thread hole 242 of projection 241 of retainer 240.In this way, into a single integrated structure upper casing 210, lower casing 220 are assembled together with retainer 240.
In addition, between retainer 240 and lower casing 220, be also provided with similarly the second sealing member 250, as shown in Fig. 3 a-3b.The second sealing member 250 plays the effect of check-valves.According to a preferred embodiment, the second sealing member 250 shows as the form of duckbill valve.The second sealing member 250 comprises the roughly framework 251 of annular and two flaps 252 being made up of elastomeric material.Preferably, described elastomeric material is the material of making after elasticity neoprene adds staple fibre, through special processing.
In the situation that not being subject to ambient pressure, two flaps 252 of the second sealing member 250 are because the elastic reaction of self keeps closing up and closed state.When the core bar 110 of puncturing lever 100 pushes and through two flaps 252 of the second sealing member 250 time, described two flaps 252 are separated from each other.Like this, the core bar 110 of puncturing lever 100 can sealing ground through two flaps 252, and then further contact and pierce through patient's stomach wall, to form the admission passage for Minimally Invasive Surgery apparatus.
puncture casing 300
As shown in Figure 1a, puncture casing 300 has near-end holding portion 310, is the tip portion 330 of bevel head dummy and is positioned at elongated hollow shell portion 320 between the two.The 26S Proteasome Structure and Function of near-end holding portion 310 and hollow shell portion 320 will be introduced below.
Near-end holding portion 310 is female Luer, and its diameter or size are much larger than tip portion 330 and hollow shell portion 320.In example as shown in Figure 1a, the shape of near-end holding portion 310 roughly becomes bowl-type or cheese, comprises trumpet type outer surface as described below, and smooth transition or extend to hollow shell portion 320.Near-end holding portion 310 is d3 along the axial axial dimension of perforator 1, as shown in Fig. 1 c.Under the confined state of perforator 1, the near-end holding portion 310 of the proximal part 120 of puncturing lever 100, the upper casing 210 of sealed compartment 200, puncture casing 300 forms the head 1a of perforator 1 together.And, near-end holding portion 310 smooth transition each other of the proximal part 120 of puncturing lever 100, the upper casing 210 of sealed compartment 200, puncture casing 300.In forming for the process of the admission passage of Minimally Invasive Surgery apparatus and after the process of operation apparatus in, surgeon can grasp the head 1a of perforator 1, near-end holding portion 310 applied thrusts to puncture casing 300, pulling force, clockwise or counterclockwise torque.
The inner chamber part 312 that near-end holding portion 310 comprises circumferential wall 313 and limited by circumferential wall 313.Under the assembled state of puncture needle 1, the inner chamber part 312 of near-end holding portion 310 is being held lower casing 220, the second sealing member 250, the retainer 240 of sealed compartment 200.
Circumferentially wall 313 comprises cylindrical portions 313a roughly and the conical shaped part 313b towards far-end smooth transition from cylindrical portions 313a.
On the internal perisporium of near-end holding portion 310, be formed with internal thread hole 311.In the process in fitting tight cabin 200, the internal thread hole 311 of near-end holding portion 310 engages with the external thread structure 225 of the periphery wall 221 of the lower casing 220 of sealed compartment 200.In this way, the lower casing 220 of sealed compartment 200 is attached in the near-end holding portion 310 of puncture casing 300 in separable mode each other.
According in puncture needle 1 of the present utility model, because the internal thread hole 311 of near-end holding portion 310 of puncture casing 300 and the external thread structure 225 of the lower casing 220 of sealed compartment 200 are to be threaded, puncture casing 300 can be easily after using from sealed compartment 200 separation, so that disinfection and reusing in upper puncture procedure once.Thereby puncture casing 300 does not belong to disposable use parts.
In order to prevent CO
2gas is revealed by the junction place between sealed compartment 200 and puncture casing 300, can elastic sealing element be set in above-mentioned junction, for example elastic packing packing ring.Described elastic sealing element is squeezed compression in the time that the internal thread hole 311 of puncture casing 300 and the external thread structure 225 of sealed compartment 200 engage.
In addition, opening is carried out in the bottom of the inner chamber part 312 of near-end holding portion 310, to be connected with the interior axial hole part of hollow shell portion 320 as described below.
The hollow shell portion 320 of puncture casing 300 has the interior axial hole part (not shown) connecting vertically.The internal diameter size of described interior axial hole part equals or is slightly larger than the outside dimension of the core bar 110 of puncturing lever 100.The core bar 110 of puncturing lever 100 is inserted through the interior axial hole part of the hollow shell portion 320 of puncture casing 300 slidably, can keep sealing by between simultaneously.
In the time that the near-end holding portion 310 of puncture casing 300 and the lower casing 220 of sealed compartment 200 are threaded, the puncture head end 111 of core bar 110 projects into the outside of the tip portion 330 of puncture casing 300.
Under the confined state of the perforator 1 shown in Fig. 1 c, the head 1a of perforator 1 overall axial dimension is vertically d.As a significant improvement of the present utility model, the axial dimension d of the head 1a of described perforator 1 equals the axial dimension d3 three sum of the near-end holding portion 310 of axial dimension d2, the puncture casing 300 of the upper casing 210 of axial dimension d1, the sealed compartment 200 of the proximal part 120 of puncturing lever 100.
According to an aspect of the present utility model, d3 is set equal to or is greater than 1/2 of d.That is to say, the axial dimension of the near-end holding portion 310 of puncture casing 300 occupies half major part or the major part of the head 1a of perforator 1.
Further preferred, d3 is equal to or greater than 60% of d.Further preferred, d3 is equal to or greater than 70% of d.
Correspondingly, according to this utility model, when surgeon is in the time that the head 1a that grips perforator 1 operates, its application of force application point is all positioned on the near-end holding portion 310 of puncture casing 300 in most cases.No matter surgeon is apply pushing force, withdrawal force or apply torque, can not act in most cases the bonding part between sealed compartment 200 and puncture casing 300.Therefore, being threaded between the external thread structure 225 of the lower casing 220 of sealed compartment 200 and the internal thread hole 311 of the near-end holding portion 310 of puncture casing 300 is not easy to be become flexible, and sealed compartment 200 and puncture casing 300 therefore can be separated not holding unintentionally yet.Correspondingly, be arranged in the CO of puncture casing 300 inner channel
2gas is not easy to be leaked to outside.
Preferably, the circumferential wall 313 of the near-end holding portion 310 of puncture casing 300 has the 313a1 of non-slip feature portion, to make surgeon can grip easily puncture casing 300 or apply torque on puncture casing 300.
Preferably, the described non-slip feature 313a1 of portion is equally distributed multiple oval-shaped pit parts on circumferential wall 313.Circumferentially on wall 313, described pit part being set, also help and in the molding process of puncture casing 300, carry out stripping operation.
Another significant improvement of the present utility model relates to following breather valve 216 and the valve body 214 thereof of describing ground in detail, being arranged at upper casing 210 places of sealed compartment 200.As shown in Figure 2, on the upper casing 210 of sealed compartment 200, form the valve body 214 of projection toward the outer side, and in valve body 214, be provided with breather valve 216.Breather valve 216 and CO
2the vent line 215 that gas supply source is connected is controllably connected.
Preferably, described valve body 214 is directly in close proximity to the outer wall 213 of upper casing 210, and one-body molded with the outer wall 213 of upper casing 210.That is, valve body 214 is directly communicated in annular space or the circular passage in upper casing 210 without the middle pipe fitting of process, thereby can utilize the technique of injection mo(u)lding to come upper casing 210 and the valve body 214 thereof of integrally moulded sealed compartment 200.In the valve body 214 of breather valve 216, be formed with a path, itself and CO
2circular passage in vent line 215 and upper casing 210 that gas supply source is connected is connected, so that CO
2gas can flow to through sealed compartment 200 and puncture casing 300 patient's abdominal cavity.
Owing to thering is above-mentioned structure, carry out thering is special facility and benefit when molded and shaped at the sealed compartment 200 to perforator 1.In common perforator, breather valve 216 is that to be roughly the cross of intersection tubular, and breather valve 216 and sealed compartment 200 are two parts separately, therefore in the time manufacturing puncture needle 1, need to first breather valve 216 and sealed compartment 200 be welded together.Be different from common perforator, in the sealed compartment 200 of perforator 1 of the present utility model, saved breather valve 216 is connected to the needed middle pipe fitting of upper casing 210, therefore saved middle pipe fitting material used.
In addition, in existing molded and shaped process, need to use three inserts.Comparatively speaking, to only needing two perpendicular inserts each other in carrying out molded and shaped process according to the sealed compartment 200 of perforator 1 of the present utility model.Compare with existing technology, also become simple according to the molding process of the sealed compartment 200 of perforator 1 of the present utility model.
Valve body 214 and the breather valve 216 thereof of sealed compartment 200 illustrate at Fig. 2 particularly.Breather valve 216 has valve body 214, is positioned at spool (not shown) and lever 216a within valve body 214.Spool can be rotatably set in valve body 214.The spool of breather valve 216 extends along being approximately perpendicular to the axial horizontal direction of perforator 1, and is positioned at valve body 214 inside of the upper casing 210 of sealed compartment 200.The bearing of trend of the lever 216a of breather valve 216 is approximately perpendicular to the bearing of trend of the spool of breather valve 216.Surgeon can be from the near-end of sealed compartment 200 towards the far-end (from top to bottom) of sealed compartment 200 or stir the lever 216a of breather valve 216 along contrary direction (from the bottom up), to be with movable valve plug in the interior rotation of valve body 214, and then control the switching of breather valve 216.
Surgeon applies torque from top to bottom or from the bottom up in the time of the lever 216a of breather valve 216, the lever 216a of breather valve 216 can drive breather valve 216 to be rotated, with the spool that makes breather valve 216 respectively in opening, part opens or closes state.Correspondingly, vent line 215 and CO
2gas supply source can be respectively in connection, locally connected or state of isolation.
According to this utility model, the spool of breather valve 216 is arranged on along above-mentioned horizontal direction in the valve body 214 of upper casing 210 of sealed compartment 200.Correspondingly, when setting up admission passage or carry out abdominal cavity inspection or operation technique in the stomach wall that utilizes perforator 1 at human body, for example, when surgeon is when for example in a perpendicular, (from top to bottom or from the bottom up) applies power or torque to lever 216a, lever 216a just can rotate, and then drives valve core rotation and open (or closing) CO
2the vent line 215 of gas.No matter the lever 216a of breather valve 216 is positioned at the near-end of sealed compartment 200 or the far-end of sealed compartment 200, all states in being contained (being the non-state stretching out) with respect to sealed compartment 200, thus the vent line 215 being connected on breather valve 216 can be reduced and hook the probability of other objects.Therefore, even if surgeon at along continuous straight runs unintentionally or laterally meet lever 216a, can not cause opening breather valve 216 and vent line 215 yet.
Optionally, the spool of breather valve 216 also can with respect to sealed compartment 200 in an acute angle be obliquely installed in the valve body 214 of upper casing 210.Similarly, the bearing of trend of the lever 216a of breather valve 216 is approximately perpendicular to the bearing of trend of the spool of breather valve 216.
In the case of the spool of breather valve 216 carries out horizontally set or is obliquely installed, can on breather valve 216, be provided with a locking system (not shown).When breather valve 216 is in an open position or closed position after, locking system can be locked, can not drive valve core rotation with the lever 216a that makes breather valve 216.
Preferably, as shown in Fig. 1 a, 1b, 1c, the near-end holding portion 310 of described puncture casing 300 has dome type outer surface, and the shell portion 320 of simultaneously adjacent with described near-end holding portion 310 puncture casing 300 has cylindrical outer surface.Described dome type outer surface and cylindrical outer surface are by the molding integratedly of identical material, and formation one trumpet type outer surface.Like this, surgeon, in the time that gripping perforator 1 operates, can abut against with its palm the proximal part 120 of puncturing lever 100, is pressing described trumpet type outer surface with its forefinger and middle finger simultaneously.
Owing to having this structure, surgeon, in the time using perforator 1 of the present utility model, only can push the trumpet type outer surface of the proximal part of puncturing lever 100 120 and puncture casing 300.Can avoid like this applying the torque that sealed compartment 200 is unscrewed from the near-end holding portion 310 of puncture casing 300.
Above multiple embodiment of the present utility model are described, but this utility model is not intended to be limited to the embodiment of description above and accompanying drawing signal.The feature of describing about an embodiment is equally applicable to other embodiment of the present utility model, and the feature of different embodiment can mutually combine and form new embodiment.In the case of not departing from the essence and scope being limited by claim below, those skilled in the art can carry out various amendments and variation to above-described embodiment.Protection domain of the present utility model is limited by appending claims subsequently.
Claims (12)
1. a perforator, comprising:
Puncture casing, it comprises and is roughly near-end holding portion, the distal portions of bowl type and is positioned at shell portion between the two;
Sealed compartment, it comprises upper casing and lower casing that one connects, described sealed compartment removably sealing is connected to the near-end holding portion of puncture casing, to make the lower casing of sealed compartment be accommodated in the near-end holding portion of puncture casing under the confined state of perforator and the upper casing of sealed compartment is exposed to the outside of the near-end holding portion of puncture casing;
Puncturing lever, it comprises the proximal part that core bar and the proximal end that is positioned at core bar grip for surgeon, the bearing of trend of described core bar defines the axial of perforator, core bar has the puncture head end for realizing puncture function at its far-end, and core bar the confined state seal performance of perforator run through the shell portion of puncture casing and sealed compartment, the puncturing head distal process of core bar stretches out the distal portions of puncture casing simultaneously outside;
It is characterized in that: the axial dimension of the near-end holding portion of the proximal part of puncturing lever, the upper casing of sealed compartment and puncture casing on the axial direction of perforator is respectively d1, d2, d3, and d3 is set equal to or is greater than 1/2 of d1, d2, d3 sum.
2. perforator as claimed in claim 1, is characterized in that: d3 is set to be greater than 60% of d1, d2, d3 sum.
3. perforator as claimed in claim 1 or 2, is characterized in that: d3 is set to be greater than 70% of d1, d2, d3 sum.
4. perforator as claimed in claim 1 or 2, is characterized in that: the outer surface of the lower casing of described sealed compartment is formed with external thread structure, and the inner surface of the near-end holding portion of sleeve pipe is formed with internal thread hole; Meanwhile, under the confined state of perforator, the internal thread hole of the near-end holding portion of the external thread structure of the lower casing of sealed compartment and sleeve pipe engages, and between is provided with elastic sealing element.
5. perforator as claimed in claim 1 or 2, is characterized in that: the near-end holding portion of puncture casing has non-slip feature portion at its circumferential wall place.
6. perforator as claimed in claim 1, is characterized in that: the breather valve that is also provided with the switching of the gas passage for controlling perforator at the upper casing place of sealed compartment; And
The lever that described breather valve comprises valve body, is arranged in the spool within valve body and can rotates at valve body with movable valve plug, the upper casing of wherein said valve body and sealed compartment carries out one-body molded, described spool extends along being approximately perpendicular to the axial horizontal direction of perforator, and the bearing of trend of described lever is approximately perpendicular to the bearing of trend of spool.
7. perforator as claimed in claim 1, is characterized in that: the breather valve that is also provided with the switching of the gas passage for controlling perforator at the upper casing place of sealed compartment; And
The lever that described breather valve comprises valve body, is arranged in the spool within valve body and can rotates at valve body with movable valve plug, the upper casing of wherein said valve body and sealed compartment carries out one-body molded, the bearing of trend of described spool is roughly in an acute angle with respect to the end face of sealed compartment, and the bearing of trend of described lever is approximately perpendicular to the bearing of trend of spool.
8. the perforator as described in claim 6 or 7, is characterized in that: on described breather valve, be also provided with a locking system, it can lockedly can not drive valve core rotation with the lever that makes breather valve.
9. the perforator as described in claim 6 or 7, is characterized in that: on the valve body of breather valve, be connected with the vent line for supply gas.
10. perforator as claimed in claim 1 or 2, it is characterized in that: the proximal part of puncturing lever is roughly umbrella-shaped structure or the flat-tope structure without cusp, together with the near-end holding portion of the proximal part of puncturing lever, the upper casing of sealed compartment and puncture casing, form the head of perforator, and smooth transition each other between adjacent two parts of the head of perforator.
11. perforators as claimed in claim 1 or 2, is characterized in that: the circular passage that is formed with supplied gas stream process in the upper casing of sealed compartment; The valve body of described breather valve is in close proximity to the upper casing of sealed compartment and one-body molded with it, forms a path in valve body simultaneously, and it is connected with described circular passage.
12. perforators as claimed in claim 1 or 2, is characterized in that: the near-end holding portion of described puncture casing has dome type outer surface, and the shell portion of simultaneously adjacent with described near-end holding portion puncture casing has cylindrical outer surface; Described dome type outer surface and cylindrical outer surface are by the molding integratedly of identical material, and form a trumpet type outer surface, and then make surgeon to grip perforator by the mode that abuts against the proximal part of puncturing lever with its palm, pressing described trumpet type outer surface with its forefinger and middle finger to operate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420056916.4U CN203790008U (en) | 2014-01-29 | 2014-01-29 | Puncture outfit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420056916.4U CN203790008U (en) | 2014-01-29 | 2014-01-29 | Puncture outfit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203790008U true CN203790008U (en) | 2014-08-27 |
Family
ID=51372290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420056916.4U Expired - Lifetime CN203790008U (en) | 2014-01-29 | 2014-01-29 | Puncture outfit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203790008U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104799911A (en) * | 2014-01-29 | 2015-07-29 | 伊西康内外科公司 | Puncture apparatus |
| CN105749418A (en) * | 2016-04-16 | 2016-07-13 | 江苏风和医疗器材有限公司 | Puncture device air valve and puncture device with same |
| CN111281496A (en) * | 2020-02-10 | 2020-06-16 | 青岛大学附属医院 | Novel enterogastric surgery abdominal cavity operation puncture device |
-
2014
- 2014-01-29 CN CN201420056916.4U patent/CN203790008U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104799911A (en) * | 2014-01-29 | 2015-07-29 | 伊西康内外科公司 | Puncture apparatus |
| CN105939681A (en) * | 2014-01-29 | 2016-09-14 | 伊西康内外科有限责任公司 | Trocar |
| CN105749418A (en) * | 2016-04-16 | 2016-07-13 | 江苏风和医疗器材有限公司 | Puncture device air valve and puncture device with same |
| CN111281496A (en) * | 2020-02-10 | 2020-06-16 | 青岛大学附属医院 | Novel enterogastric surgery abdominal cavity operation puncture device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |
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| CX01 | Expiry of patent term |