CN106333733B - Coreless puncture outfit - Google Patents

Abstract

The invention discloses a coreless puncture outfit, which comprises: a piercing tip, a cannula assembly, and a seal assembly; the casing subassembly includes the sleeve pipe, the sleeve pipe link up the setting, sheathed tube one end by seal assembly carries out the selectivity sealed, the sheathed tube other end by puncture pointed end selectivity is opened or is closed, just puncture pointed end one end accept in the sleeve pipe in the other end, puncture pointed end with rotatable mode connect in on the outside wall of the sleeve pipe other end. The coreless puncture outfit is convenient to use and low in cost, does not have a puncture core bar in the traditional puncture outfit, realizes puncture of the puncture outfit by a puncture tip, and can open a port of a sleeve for an anastomat or other surgical instruments to enter when the anastomat or other surgical instruments need to enter an abdominal cavity.

Description

Coreless puncture outfit

Technical Field

The invention relates to a surgical instrument, in particular to a coreless puncture outfit, and belongs to the field of medical equipment.

Background

In abdominal cavity examination, abdominal cavity operation and other minimally invasive or surgical operations, a puncture outfit is an indispensable surgical instrument. The puncture instrument may establish an access channel in the abdominal wall of the body for the entry of a stapler or other surgical instrument (e.g., endoscope, scissors, guide wire, catheter, filter, stent, etc.) into the abdominal cavity and provide a passage for the ingress and egress of gas to control the pneumoperitoneum required for the procedure to be performed for examination or surgical procedures.

When a medical operation of the minimally invasive anastomat is started, a doctor generally firstly cuts a small incision on the abdomen of a patient, then the top point of the puncture end of the puncture core rod is aligned with the cut small incision to reciprocate and move downwards, the puncture sleeve penetrates through the cortex of the abdomen of the patient by the puncture device, and then the doctor pulls out the puncture core rod in the puncture sleeve.

However, most of the puncture outfits are disposable, so that in the traditional puncture outfits with puncture core bars, the puncture core bar of each puncture outfit is discarded after puncture is finished, thereby causing serious waste and improving the manufacturing cost of the puncture outfits; and because the seal structure of puncture ware is the elasticity material, in order to ensure its leakproofness, puncture core bar and seal cover tube assembly need split back packing, have improved the packing cost. Therefore, it is necessary to provide a further solution to the above problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a coreless puncture outfit to overcome the defects in the prior art.

To achieve the above object, the present invention provides a coreless puncture instrument, comprising: a piercing tip, a cannula assembly, and a seal assembly;

the casing subassembly includes the sleeve pipe, the sleeve pipe link up the setting, sheathed tube one end by seal assembly carries out the selectivity sealed, the sheathed tube other end by puncture pointed end selectivity is opened or is closed, just puncture pointed end one end accept in the sleeve pipe in the other end, puncture pointed end with rotatable mode connect in on the outside wall of the sleeve pipe other end.

As an improvement of the coreless piercer of the present invention, the piercing tip has a first position and a second position; when the puncture tip is positioned at the first position, the central axis of the puncture tip is parallel to or coincided with the central axis of the cannula, and the other end of the cannula is closed by the puncture tip; when the puncture tip is located at the second position, an included angle is formed between the central axis of the puncture tip and the central axis of the cannula, and the other end of the cannula is opened by the puncture tip.

As an improvement of the coreless puncture outfit, the inner side wall of the sleeve is symmetrically provided with sliding grooves, the outer side wall of the puncture tip is symmetrically provided with sliding blocks, and the sliding blocks can slide along the sliding grooves.

As an improvement of the coreless puncture outfit, the sliding groove comprises a first sliding groove and a second sliding groove, the first sliding groove extends along the axial direction of the sleeve, the end parts of the first sliding groove and the second sliding groove are communicated, an included angle is formed between the first sliding groove and the second sliding groove, and the included angle is an obtuse angle.

As an improvement of the coreless puncture outfit of the invention, the sliding groove further comprises a third sliding groove, the third sliding groove is communicated with the first sliding groove and the second sliding groove, the third sliding groove and the second sliding groove are symmetrically arranged, and the symmetry axis of the third sliding groove and the second sliding groove is superposed with the central line of the first sliding groove in the length direction.

As an improvement of the coreless puncture outfit, an included angle is formed between the second sliding groove and the third sliding groove, the included angle is smaller than 180 degrees, a protrusion is arranged between the second sliding groove and the third sliding groove, and the protrusion extends towards the first sliding groove.

As an improvement of the coreless puncture outfit of the invention, the end of the bulge is arc-shaped or linear.

As an improvement of the coreless puncture outfit, the sliding groove is an arc-shaped groove, the sliding block can slide from one end of the arc-shaped groove to the other end of the arc-shaped groove, when the sliding block is positioned at one end of the arc-shaped groove, the central axis of the puncture tip is parallel to or coincided with the central axis of the cannula, and the other end of the cannula is closed by the puncture tip; when the sliding block slides to the other end of the arc-shaped groove, an included angle is formed between the central axis of the puncture tip and the central axis of the sleeve, and the other end of the sleeve is opened by the puncture tip.

As an improvement of the coreless puncture outfit, the end part of the puncture tip is symmetrically provided with an extension part, and the slide block is positioned on the outer side wall of the extension part.

As an improvement of the coreless puncture outfit of the invention, a step part is arranged on the outer side wall of the puncture tip.

As an improvement of the coreless puncture outfit, the puncture tip and the cannula are both provided with concave structures, so that the puncture tip and the cannula are prevented from interfering when moving mutually.

As an improvement of the coreless puncture outfit of the invention, an inclined plane is arranged in the inner space of the puncture tip, the edge of the inclined plane is connected with the inner side wall of the puncture tip, the inclined plane is obliquely arranged towards the rotating direction of the puncture tip, and the inclined plane is close to the other end of the cannula.

As an improvement of the coreless piercer of the present invention, the bevel is elliptical, or the bevel comprises a first bevel and a second bevel, the first bevel and the second bevel are intersected, the axis of the cannula passes through the intersection line between the first bevel and the second bevel, and both the first bevel and the second bevel are semi-elliptical.

Compared with the prior art, the invention has the beneficial effects that: the coreless puncture outfit of the invention does not have the puncture core bar in the traditional puncture outfit, thereby having lower cost, and the puncture core bar and the sealing sleeve component do not need to be disassembled and then packaged, thereby reducing the packaging cost. The coreless puncture outfit realizes puncture of the puncture outfit by the puncture tip, and can open the port of the sleeve for the entry of the anastomat or other surgical instruments when the anastomat or other surgical instruments need to enter the abdominal cavity, thereby being convenient for use.

Drawings

FIG. 1 is an exploded view of a piercing tip and cannula assembly of one embodiment of a coreless puncture instrument of the present invention;

FIG. 2 is a schematic plan view of the coreless piercer of the present invention with the piercing tip in the first position;

FIG. 3 is a schematic plan view of the coreless puncture instrument of the present invention, with the puncture tip in the second position;

FIG. 4 is a schematic axial cross-sectional view of one embodiment of a cannula of the coreless puncture instrument of the present invention;

FIG. 5 is a schematic axial cross-sectional view of another embodiment of a cannula of the coreless puncture instrument of the present invention;

FIG. 6 is a schematic axial cross-sectional view of a coreless puncture instrument of the present invention, with a bevel disposed inside the puncture tip;

FIG. 7 is a schematic axial cross-sectional view of a coreless puncture instrument of the present invention, in which a bevel is provided inside the puncture tip.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "reciprocal", and the like, indicate orientations and positional relationships that are based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. The following describes each embodiment of the present invention in detail with reference to specific embodiments.

As shown in fig. 1, the coreless puncture instrument of the present invention includes: apiercing tip 10, a cannula assembly, and a seal assembly.

Thepiercing tip 10 is used to effect piercing by a piercing instrument, which replaces the piercing core of existing piercing instruments. And thepiercing tip 10 can open the port of the cannula for entry of a stapler or other surgical instrument when it is desired to enter the abdominal cavity.

The cannula assembly includes acannula 20, thecannula 20 being disposed therethrough to establish an access path for a stapler or other surgical instrument after it enters the abdominal cavity of a human body. One end of thecannula 20 is selectively sealed by the sealing assembly (not shown), theother end 21 of thecannula 20 is selectively opened or closed by thepiercing tip 10, and one end of thepiercing tip 10 is received in theother end 21 of thecannula 20. Specifically, thepiercing tip 10 is rotatably movably attached to the outer side wall surface of the end of thecannula 20. Wherein, the selective sealing means that the sealing component does not seal one end of thecannula 20 when the anastomat or other surgical instruments are required to enter the abdominal cavity; the seal assembly seals one end of thecannula 20 when access to the abdominal cavity is not required by a stapler or other surgical instrument. The selective opening or closing means that, at the time of puncturing, thepuncturing tip 10 closes theother end 21 of thecannula 20; when it is desired to access the abdominal cavity with a stapler or other surgical instrument, thepiercing tip 10 opens theother end 21 of thecannula 20.

Thus, when a puncture is desired, thepuncture tip 10 closes theother end 21 of thecannula 20 and, under the force of the puncture, thepuncture tip 10 penetrates through the incisional cortex of the patient's abdomen and into the abdominal cavity of the person. When it is required to insert a stapler or other surgical instrument into the abdominal cavity of a human body, the stapler or other surgical instrument enters thecannula 20 from one end of thecannula 20, and thepuncture tip 10 performs a rotational motion and opens theother end 21 of thecannula 20 under the action of the inserted stapler or other surgical instrument, thereby facilitating the insertion of the stapler or other surgical instrument.

With reference to fig. 2 and 3, further, thepiercing tip 10 has a first position a and a second position B. When thepuncture tip 10 is located at the first position a, the central axis of thepuncture tip 10 is parallel to or coincident with the central axis of thecannula 20, and theother end 21 of thecannula 20 is closed by thepuncture tip 10; when thepuncture tip 10 is located at the second position B, an included angle is formed between the central axis of thepuncture tip 10 and the central axis of thecannula 20, and theother end 21 of thecannula 20 is opened by thepuncture tip 10.

As shown in fig. 1, astepped portion 101 is provided on an outer side wall of one end of thepuncture tip 10, and thestepped portion 101 abuts against an end surface of theother end 21 of thecannula 20. Preferably, the wall thickness of the portion of theother end 21 of thecannula 20 that is nested with thepiercing tip 10 corresponds to the height of thestep 101. Said height is in the radial direction of saidsleeve 20. By the arrangement, the consistency of the outer diameter sizes of thepuncture tip 10 and thecannula 20 is kept, the condition that the tissues of a patient are clamped can be avoided, and the smooth puncture process is facilitated.

As shown in fig. 4, in order to realize that thepuncture tip 10 can open or close the port of thecannula 20 in a rotating manner, sliding grooves are symmetrically formed on the inner side wall of thecannula 20, the inner side wall of thecannula 20 comprises the inner side wall of theother end 21, andsliders 11 are symmetrically formed on the outer side wall of thepuncture tip 10, and thesliders 11 can slide along the sliding grooves. The sliding groove may be formed through the wall surface of thesleeve 20 or may be formed in a recessed manner in the inner wall of thesleeve 20.

Specifically, the sliding grooves on either side include a firstsliding groove 23 and a secondsliding groove 24, wherein the firstsliding groove 23 extends along the axial direction of thesleeve 20, the ends of the firstsliding groove 23 and the secondsliding groove 24 are communicated, and an included angle is formed between the firstsliding groove 23 and the secondsliding groove 24, and the included angle is an obtuse angle. Preferably, the firstsliding groove 23 and the secondsliding groove 24 are smoothly connected to facilitate the sliding of the slidingblock 11 between the firstsliding groove 23 and the secondsliding groove 24. Preferably, thesliding block 11 may be a cylindrical protrusion structure, and the sliding groove is a special-shaped groove for the slidingblock 11 to slide in.

Therefore, when puncture is needed, the central axis of thepuncture tip 10 is parallel to or coincident with the central axis of thecannula 20, and thepuncture tip 10 guides thecannula 20 into the abdominal cavity of the human body. After thepuncture tip 10 and thecannula 20 enter the abdominal cavity of the human body, when a stapler or other surgical instrument needs to be inserted into the abdominal cavity of the human body, under the action of an external force, thesliding block 11 slides along the firstsliding groove 23 to the second slidinggroove 24, and is finally positioned at one end of the secondsliding groove 23. Due to the obtuse angle between the first and second slidingslots 23 and 24, thepuncture tip 10 is rotated to one side of thecannula 20, thereby opening the port of thecannula 20 to facilitate the entry and exit of the stapler or other surgical instrument into and out of the patient.

In other embodiments, as shown in FIG. 5, to effect bi-directional rotation of thepuncture cannula 20. The sliding grooves on any side further comprise a third slidinggroove 25, wherein the third slidinggroove 25 is communicated with the first slidinggroove 23 and the second slidinggroove 24, the third slidinggroove 25 and the second slidinggroove 24 are symmetrically arranged, and the symmetry axis of the third slidinggroove 25 and the second slidinggroove 24 coincides with the central line of the first slidinggroove 23 in the length direction. Preferably, the first slidinggroove 23 and the third slidinggroove 25 are smoothly connected to facilitate the sliding of the slidingblock 11 between the first slidinggroove 23 and the third slidinggroove 25.

With such an arrangement, when a stapler or other surgical instrument needs to be inserted into the abdominal cavity of a human body, a doctor can slide the slidingblock 11 into the second slidinggroove 24 or the third slidinggroove 25 along the first slidinggroove 23 by controlling the direction of an external force applied to thepuncture tip 10 by the stapler or other surgical instrument according to the surgical requirement, and at this time, thepuncture tip 10 rotates to one side of thecannula 20, so that the port of thecannula 20 is opened, thereby facilitating the entry of the stapler or other surgical instrument.

When the sliding groove simultaneously comprises a second slidinggroove 24 and a third slidinggroove 25, an included angle is formed between the second slidinggroove 24 and the third slidinggroove 25, and the included angle is smaller than 180 degrees. Between thesecond runner 24 and thethird runner 25, there is aprotrusion 26, and theprotrusion 26 extends toward thefirst runner 23. By providing saidprotrusion 26, theslider 11 is limited from moving in the sliding groove, so as to avoid the puncturingtip 10 from rotating by itself under the action of external force. Preferably, the ends of theprojections 26 are curved or linear.

In addition, in other embodiments, the sliding groove may be provided as an integral structure, in which case, the sliding groove is integrally formed and is an arc-shaped groove, and the slidingblock 11 may slide from one end of the arc-shaped groove to the other end of the arc-shaped groove. Thus, when theslider 11 is located at one end of the arc-shaped slot, the central axis of thepuncture tip 10 is parallel to or coincides with the central axis of thecannula 20, and the other end of thecannula 20 is closed by thepuncture tip 10; when theslider 11 slides to the other end of the arc-shaped groove, an included angle is formed between the central axis of thepuncture tip 10 and the central axis of thecannula 20, and the other end of thecannula 20 is opened by thepuncture tip 10.

Since one end of the puncture tip is received in theother end 21 of thecannula 20, interference occurs between thepuncture tip 10 and thecannula 20 when thepuncture tip 10 is rotated with respect to thecannula 20. The interference here refers to the limitation of motion caused by the fact that two or more components cannot move continuously or rub against each other due to mutual collision when moving. Thus, to avoid interference, the piercingtip 10 is provided with arecess structure 30 at the interference portion when rotated relative to thecannula 20. By providing therecess structure 30, as shown in FIG. 1, interference between the piercingtip 10 and thecannula 20 during relative movement is avoided, resulting in the piercingtip 10 not being able to open.

The end of thepuncture tip 10 is symmetrically provided with extendingparts 12, the extendingparts 12 extend along the axial direction of thepuncture tip 10, and theslider 11 is located on the wall surface of the outer side of the extendingparts 12. Preferably, theextension 12 extends from thepuncture tip 10 integrally, and in other embodiments, theextension 12 may also be disposed on thepuncture tip 10 in a connecting manner.

As shown in fig. 6, in addition, in order to enable thepuncture tip 10 to smoothly rotate to one side of thecannula 20 by the action of the stapler or other surgical instrument, aslope 13 is provided in an inner space of thepuncture tip 10, an edge of theslope 13 is connected to an inner sidewall of thepuncture tip 10, theslope 13 is obliquely provided toward a rotation direction of thepuncture tip 10, and theslope 13 is adjacent to a port of thecannula 20. In this manner, when the stapler or other surgical instrument is inserted into thecannula 20 and abuts against the inclined surface, theinclined surface 13 enables the force applied by the stapler or other surgical instrument to break up a component along theinclined surface 13, and thepuncture tip 10 can be smoothly rotated by the component.

As shown in fig. 7, in the above embodiment, theinclined surface 13 may have an elliptical shape. Further, to accommodate bi-directional rotation of the piercingcannula 20, thebevel 13 includes a first bevel and a second bevel, wherein the first and second bevels intersect and the axis of thecannula 20 passes through the intersection between the first and second bevels. At this time, the first inclined plane and the second inclined plane are semi-elliptical.

In conclusion, the coreless puncture outfit of the invention has convenient use and low cost, does not have the puncture core rod in the traditional puncture outfit, realizes puncture of the puncture outfit by the puncture tip, and can open the port of the sleeve for the entry of the anastomat or other surgical instruments when the anastomat or other surgical instruments need to enter the abdominal cavity.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (11)

1. A coreless puncture instrument, comprising: a piercing tip, a cannula assembly, and a seal assembly;

the cannula assembly comprises a cannula which is arranged in a through way, one end of the cannula is selectively sealed by the sealing assembly, the other end of the cannula is selectively opened or closed by the puncture tip, and one end of the puncture tip is accommodated in the other end of the sleeve, the puncture tip is rotatably connected to the inner side wall surface of the other end of the sleeve, the outer side wall of the puncture tip is provided with a step part which is propped against the end surface of the other end of the sleeve, the wall thickness of the part of the other end of the sleeve sleeved on the puncture tip is consistent with the height of the step part, the height is along the radial direction of the sleeve, the inner side wall of the sleeve is symmetrically provided with sliding grooves, the outer side wall of the puncture tip is symmetrically provided with sliding blocks, and the sliding blocks can slide along the sliding grooves.

2. The coreless piercer of claim 1, wherein the piercing tip has a first position and a second position; when the puncture tip is positioned at the first position, the central axis of the puncture tip is parallel to or coincided with the central axis of the cannula, and the other end of the cannula is closed by the puncture tip; when the puncture tip is located at the second position, an included angle is formed between the central axis of the puncture tip and the central axis of the cannula, and the other end of the cannula is opened by the puncture tip.

3. The coreless piercer of claim 1, wherein the sliding slot includes a first sliding slot and a second sliding slot, the first sliding slot extending substantially in an axial direction of the cannula, ends of the first sliding slot and the second sliding slot being in communication, and an included angle is formed between the first sliding slot and the second sliding slot, the included angle being an obtuse angle.

4. The coreless piercer of claim 3, wherein the sliding slot further comprises a third sliding slot, the third sliding slot is in communication with the first sliding slot and the second sliding slot, the third sliding slot and the second sliding slot are symmetrically arranged, and a symmetry axis of the third sliding slot and the second sliding slot coincides with a center line of the first sliding slot in a length direction.

5. The coreless piercer of claim 4, wherein the second slot and the third slot are angled at an angle of less than 180 °, and wherein a protrusion is disposed between the second slot and the third slot, the protrusion extending toward the first slot.

6. The coreless piercer of claim 5, wherein the end of the protrusion is curved or linear.

7. The coreless piercer of claim 1, wherein the sliding slot is an arcuate slot, the slider is slidable from one end of the arcuate slot to the other end, the central axis of the piercing tip is parallel to or coincides with the central axis of the cannula when the slider is positioned at one end of the arcuate slot, and the other end of the cannula is closed by the piercing tip; when the sliding block slides to the other end of the arc-shaped groove, an included angle is formed between the central axis of the puncture tip and the central axis of the sleeve, and the other end of the sleeve is opened by the puncture tip.

8. The coreless piercer of claim 1, wherein the end of the piercing tip is symmetrically provided with an extension, the slider being located on an outer sidewall of the extension.

9. The coreless piercer of claim 1, wherein the piercing tip and the cannula are each provided with a recess to prevent interference when the two are moved relative to each other.

10. The coreless piercer of claim 1, wherein the piercing tip is provided with a bevel in the interior space, the edge of the bevel being connected to an inner sidewall of the piercing tip, the bevel being angled towards the direction of rotation of the piercing tip, and the bevel being located proximate to the other end of the cannula.

11. The coreless piercer of claim 10, wherein the bevel is elliptical, or wherein the bevel comprises a first bevel and a second bevel, the first bevel and the second bevel intersecting, the axis of the cannula passing through an intersection between the first bevel and the second bevel, the first bevel and the second bevel both being semi-elliptical.

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