CN202982114U

CN202982114U - Staple head component of circular tubular stapler

Info

Publication number: CN202982114U
Application number: CN 201220755812
Authority: CN
Inventors: 陈望东; 孙克展
Original assignee: Touchstone International Medical Science Co Ltd
Current assignee: Touchstone International Medical Science Co Ltd
Priority date: 2012-12-29
Filing date: 2012-12-29
Publication date: 2013-06-12
Anticipated expiration: 2022-12-29

Abstract

The utility model discloses a staple head component of a circular tubular stapler. The component at least comprises a staple cylinder and a staple anvil, wherein the staple cylinder comprises a shell, the near end of which is connected with a main body of the circular tubular stapler; a check-up tube and a staple pushing sheet are equipped in the shell, the staple anvil comprises a staple anvil ring and a staple anvil shaft fixedly connected with each other, the staple anvil shaft slides within the check-up tube, the side surface of the shell of the staple cylinder is provided with at least one opening which is communicated with a first cavity used for containing the tissues to be cut, the distance from the far end of the check-up tube to the near end of the shell is smaller than that from the farthest side of the opening to the same, and at least a part of the first cavity is exposed from the opening. The staple head component of the circular tubular stapler disclosed by the utility model has the advantages that a large viewing window can be provided when the component is used in a surgery by providing the opening at the middle end of the staple cylinder, and the tissues are conveniently pulled and more cut tissues are contained during the surgery by decreasing the settings of the check-up tube and the reinforcing rib and correspondingly arranging the staple pushing sheet.

Description

A kind of nail-head component of circular-pipe anastomat

Technical field

This utility model relates to a kind of circular-pipe anastomat, and especially a kind of nail-head component of circular-pipe anastomat belongs to technical field of medical instruments.

Background technology

The understanding history of existing more than 4000 year of people to hemorrhoid, the traditional method of internal hemorrhoid treatment comprises injection of sclerosing agent, rubber snare bundle and various forms of surgical operations etc.These methods are all to treat for hemorrhoid itself, are intended to make blood stasis dwindle or disappear.In the surgical operation of hemorrhoid excision, a kind of PPH of being called operation method is arranged, i.e. mucosa procedure on the hemorrhoid of carrying out under the help of circular-pipe anastomat.

US Patent No. 6083241 has disclosed a kind of circular-pipe anastomat, its nail-head component comprises nail anvil and nail barrel, establishes nail bin, pushing slice of nail, nail in nail barrel, and described nail anvil is relative with nail barrel and put, in operation, mucosa on hemorrhoid is pulled in nail barrel, is about to mucosa ring cutting on hemorrhoid when identical.

The nail barrel of the circular-pipe anastomat that generally uses at present, the restriction due to himself structure makes its use procedure in operation limited to the form that the doctor provides, and be unfavorable for organizing draw in and hold more tissue to be cut, have larger limitation.

The utility model content

This utility model purpose is to solve above-mentioned technical problem, provides a kind of circular-pipe anastomat can realize the jumbo nail-head component of large form.

The technical solution of the utility model is: a kind of nail-head component of circular-pipe anastomat, at least comprise nail barrel and nail anvil, described nail barrel comprises housing, and the near-end of described housing is used for being connected with the body of circular-pipe anastomat, is provided with only tube and pushing slice of nail in described housing; Described nail anvil comprises pin anvil ring and the pin anvil shaft that is mutually permanently connected, described pin anvil shaft only slides in tube described, the housing side of described nail barrel offers at least one opening, described opening and the first cavity perforation that is used for holding tissue to be cut, the far-end of described only tube less than the distal edge of the described opening distance to the near-end of housing, has at least the first cavity partly to reveal from described opening to the distance of the near-end of housing.

Preferably, the housing middle-end of described nail barrel offers four symmetrical openings, is equipped with reinforcement between adjacent apertures.

Preferably, in the housing cross section of described nail barrel, the central angle of described opening is greater than the central angle of reinforcement.

Preferably, the shape of described pushing slice of nail and described nail barrel are complementary, and the second cavity is offered in described pushing slice of nail middle-end inside, and described the second cavity is aimed at the first cavity of described nail barrel.

Preferably, the proximal extension of described only tube is to the near-end of housing, and the near-end of the described pin anvil shaft that coordinates with described only tube also extends to the near-end that stops tube and cooperatively interacts.

Preferably, be provided with at least one gathering sill in the through hole of described only tube, at least one guiding rib correspondingly is set on described pin anvil shaft, described guiding rib can slide in described gathering sill.

The utility model has the advantages that:

1. by offer four symmetrical openings in the nail barrel middle-end, can provide large form in operation is used, the only reduction setting of tube and reinforcement, and the relative set of pushing slice of nail makes drawing in and holding more of being convenient in operation organize cut and organize;

2. only the tube proximal extension arranges, and has made up nail barrel and reinforcement and has reduced the deficiency that the axial and circumferential intensity of bringing is set; The pin anvil shaft near-end also extends setting, has increased pin anvil shaft and has stopped coordinating of tube.

Description of drawings

Fig. 1 is the structural representation of this utility model embodiment one;

Fig. 2 is the structural representation of nail barrel in this utility model embodiment one;

Fig. 3 is the structural representation of pushing slice of nail in this utility model embodiment one.

Wherein: 1, nail barrel; 2, pin anvil ring; 21, pin anvil shaft; 3, opening; 31, distal edge; 4, reinforcement; 5, the first cavity; 11, housing; 12, near-end; 13, stop tube; 14, pushing slice of nail; 15, the second cavity.

The specific embodiment

Embodiment one: shown in Figure 1, this utility model provides a kind of nail-head component of circular-pipe anastomat, comprises at least nail barrel shown in Figure 21, pushing slice of nail 14 and nail anvil shown in Figure 3.Described nail anvil comprises pin anvil ring 2 and the pin anvil shaft 21 that is mutually permanently connected.

Specifically shown in Figure 2, described nail barrel 1 comprises a housing 11, the near-end 12 of described housing 11 is used for being connected with the body of circular-pipe anastomat, be provided with only tube 13 and pushing slice of nail 14 in described housing 11, only tube 13 comprises a through hole, and this through hole is used for making the pin anvil shaft 21 of nail anvil slide through, preferred embodiment is, only be provided with two gathering sills in the through hole of tube 13, two guiding ribs correspondingly are set on described pin anvil shaft 21, described guiding rib can slide in described gathering sill.

In this preferred embodiment, be provided with four symmetrical openings 3 at the side opening of described nail barrel 1, such four sides opening arranges can provide large form to medical personnel in operation, and 3 of adjacent apertures are equipped with reinforcement 4.Described opening 3 and the first cavity 5 perforations that are used for holding tissue to be cut, the far-end of described only tube 13 arrives the distance of the near-end 12 of housing 11 less than the distal edge 31 of described opening 3 to the distance of the near-end 12 of housing 11, have at least the first cavity 5 of part to reveal from described opening 3, make drawing in and holding more of being convenient in operation organize cut and organize.And in housing 11 cross sections of described nail barrel 1, the central angle of described opening 3 is greater than the central angle of reinforcement 4.Large opening setting like this makes the doctor have splendid observation visual angle when operation.

Further, an end of described reinforcement 4 and the housing 11 of nail barrel 1 are wholely set, and the length of the other end equals the described only length of tube 13.In conjunction with shown in Figure 3, the shape of described pushing slice of nail 14 and described nail barrel 1 are complementary, and the second cavity 15 is offered in described pushing slice of nail 14 middle-end inside, and described the second cavity 15 is aimed at the first cavity 5 of described nail barrels 1.Pushing slice of nail 14 is similar with arranging of nail barrel 1, is in order to bring larger receiving space, to hold more tissue to be cut equally.

For the deficiency of the axial and circumferential intensity that makes up the apparatus that the only reduction of tube 13 and reinforcement 4 brings, only the tube near-end has carried out extending and has arranged, and also corresponding proximal extension of pin anvil shaft, increase pin anvil shaft and stop coordinating of tube simultaneously.Be specially: the proximal extension of described only tube is to the near-end of housing, and the near-end of the described pin anvil shaft that coordinates with described only tube also extends to and the near-end that stops tube.

Far-end in this utility model and near-end are the residing positions of apparatus when performing the operation with the doctor, and an end nearer apart from the doctor is near-end, and an end far away apart from the doctor is far-end.

This utility model still has numerous embodiments, and all employings are equal to replacement or equivalent transformation and all technical schemes of forming, within all dropping on the claimed scope of this utility model.

Claims

1. the nail-head component of a circular-pipe anastomat, at least comprise nail barrel (1) and nail anvil, described nail barrel (1) comprises housing (11), the near-end (12) of described housing (11) is used for being connected with the body of circular-pipe anastomat, is provided with only tube (13) and pushing slice of nail (14) in described housing (11); described nail anvil comprises pin anvil ring (2) and the pin anvil shaft (21) that is mutually permanently connected, described pin anvil shaft (21) slides in described only tube (13), it is characterized in that: housing (11) side opening of described nail barrel (1) is provided with at least one opening (3), described opening (3) and the first cavity (5) perforation that is used for holding tissue to be cut, the far-end of described only tube (13) arrives the distance of the near-end (12) of housing (11) less than the distal edge (31) of described opening (3) to the distance of the near-end (12) of housing (11), have at least first cavity (5) of part to reveal from described opening (3).

2. the nail-head component of a kind of circular-pipe anastomat according to claim 1, it is characterized in that: housing (11) middle-end of described nail barrel (1) offers four symmetrical openings (3), is equipped with reinforcement (4) between adjacent apertures (3).

3. the nail-head component of a kind of circular-pipe anastomat according to claim 2, it is characterized in that: in housing (11) cross section of described nail barrel (1), the central angle of described opening (3) is greater than the central angle of reinforcement (4).

4. the nail-head component of a kind of circular-pipe anastomat according to claim 1, it is characterized in that: the shape of described pushing slice of nail (14) and described nail barrel (1) are complementary, the second cavity (15) is offered in described pushing slice of nail (14) middle-end inside, and described the second cavity (15) is aimed at first cavity (5) of described nail barrel (1).

5. the nail-head component of a kind of circular-pipe anastomat according to claim 1, it is characterized in that: the proximal extension of described only tube (13) is to the near-end (12) of housing (11), and described pin anvil shaft (21) near-end that coordinates with described only tube (13) also extends to the near-end that stops tube (13) and cooperatively interacts.

6. the nail-head component of a kind of circular-pipe anastomat according to claim 1, it is characterized in that: be provided with at least one gathering sill in the through hole of described only tube, at least one guiding rib correspondingly is set on described pin anvil shaft, and described guiding rib can slide in described gathering sill.