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CN-224220510-U - Inert trocar for heparin cap

CN224220510UCN 224220510 UCN224220510 UCN 224220510UCN-224220510-U

Abstract

The utility model discloses a blunt trocar for a heparin cap, which relates to the field of medical appliances and comprises a cannula main body, wherein one end of the cannula main body is provided with a needle opening with a bevel structure, the cannula main body is provided with a protection structure, and the protection structure is at least provided with protection parts covered on two opposite sides of the needle opening. The utility model reduces the resistance when the heparin cap is punctured, lightens the working strength of medical staff, and simultaneously avoids direct contact with a needle opening in the use process.

Inventors

  • CHANG SILIANG
  • Che Huanjie
  • YU XIAOXIAO
  • ZHANG ZHUANGNAN

Assignees

  • 山东威高集团医用高分子制品股份有限公司

Dates

Publication Date
20260512
Application Date
20250707

Claims (10)

  1. 1. A blunt trocar for heparin cap, comprising: The novel needle cannula comprises a cannula main body (1), wherein a needle opening (2) is formed in one end of the cannula main body (1), and the needle opening (2) is of a bevel structure; The protection structure (4) is arranged on the sleeve main body (1), and the protection structure (4) is at least provided with protection parts (42) which are covered on two opposite sides of the needle opening (2).
  2. 2. The blunt trocar for heparin cap according to claim 1, wherein a connector (3) is provided at one end of the cannula body (1) facing away from the needle opening (2), and a connection structure is provided on the connector (3) to enable the connector (3) to be connected to a needle holder or a syringe.
  3. 3. The blunt trocar for heparin cap according to claim 2, wherein the connection structure comprises an external thread provided on the outer shaft of the connector (3).
  4. 4. The blunt trocar for heparin cap according to claim 2, wherein the cannula body (1), the needle port (2) and the connector (3) are of an integrally formed structure.
  5. 5. The blunt trocar for heparin cap according to claim 1, wherein two guard portions (42) provided opposite to each other are provided on both sides of the cannula body (1) through mounting portions (41), a buffer space is provided between the two guard portions (42) and the cannula body (1), and the guard portions (42) are deflected toward the cannula body (1) under pressure.
  6. 6. The blunt trocar for heparin cap according to claim 5, wherein the mounting portion (41) and the protecting portion (42) are integrally of N-type structure, and both protecting portions (42) are provided with a receiving portion (43) for receiving the needle port (2) on a side close to the cannula main body (1).
  7. 7. The blunt trocar for heparin cap according to claim 1, wherein the material of the protective structure (4) is identical to the material of the cannula body (1) or the material of the protective structure (4) is medical silicone rubber.
  8. 8. The blunt trocar for heparin cap of any one of claims 1-7, wherein the bevel feature has an inclination angle ranging from 30 ° to 60 °.
  9. 9. A blunt trocar for heparin cap as claimed in claim 8, wherein a side surface of each of the protecting parts (42) facing away from the cannula body (1) is provided with an anti-slip structure.
  10. 10. The blunt trocar for heparin cap as recited in claim 9, wherein said slip resistant structure comprises a plurality of raised stripes disposed on a surface of said guard (42), a plurality of said raised stripes being disposed in parallel and/or intersecting relation.

Description

Inert trocar for heparin cap Technical Field The utility model relates to the technical field of medical instruments, in particular to a blunt trocar for a heparin cap. Background Heparin caps play a very important role in modern medical systems as a key component in intravenous/arterial infusion systems. In the related operation of heparin cap, conventionally, a puncture device is often used as a syringe or a device with a intravenous needle port for achieving functions such as infusion, blood transfusion, and blood collection. These conventional devices are well established in clinical practice and have a certain stability and reliability. In addition, some manufacturers have introduced blunt cannulas to address some of the problems of conventional lancing devices. Such trocars, in their particular blunt design, reduce to some extent the risk of direct exposure of the healthcare worker to the needle opening. However, although the conventional blunt cannula is improved in terms of reducing exposure risk, the front end of the needle opening is mostly in a flush structure, so that the contact surface with the heparin cap is large when the heparin cap is punctured, and the puncture resistance is obviously increased. The operation of medical staff becomes extremely laborious, and the structure of the heparin cap is easily damaged due to excessive force, so that the invasion of external viruses and bacteria is caused, and the possibility of infection is increased. In view of the above, it is a problem to be solved by those skilled in the art to reduce the difficulty of blunt cannula penetration and avoid direct contact with the needle port during use. Disclosure of utility model In view of the above, the present utility model aims to provide a blunt trocar for heparin cap, which effectively reduces the difficulty of blunt cannula puncture and avoids direct contact with the needle opening during use. In order to achieve the above object, the present utility model provides the following technical solutions: a blunt trocar for heparin cap, comprising: The sleeve comprises a sleeve body, wherein a needle opening is formed in one end of the sleeve body, and the needle opening is of an inclined opening structure; The protection structure is arranged on the sleeve main body and at least provided with protection parts covered on two opposite sides of the needle opening. Preferably, a connector is arranged at one end of the sleeve main body, which is away from the needle opening, and a connecting structure is arranged on the connector so that the connector can be connected into a needle holder or a syringe. Preferably, the connecting structure comprises an external thread arranged on the outer shaft of the connector. Preferably, the sleeve body, the needle opening and the connector are of an integrated structure. Preferably, the two protection parts arranged oppositely are arranged at two sides of the sleeve main body through the mounting parts, a buffer space is arranged between the two protection parts and the sleeve main body, and the protection parts deflect towards the sleeve main body under pressure. Preferably, the mounting portion and the protecting portion are integrally of an N-type structure, and the two protecting portions are provided with accommodating portions for accommodating the needle openings on one sides of the protecting portions, which are close to the sleeve body. Preferably, the material of the protection structure is consistent with the material of the sleeve main body or the material of the protection structure is medical silicon rubber. Preferably, the inclined angle of the bevel structure is in the range of 30-60 degrees. Preferably, a side surface of each protection part facing away from the sleeve main body is provided with an anti-slip structure. Preferably, the anti-slip structure comprises a plurality of raised stripes arranged on the surface of the protecting part, and the raised stripes are parallel and/or crossed. The blunt trocar for the heparin cap provided by the utility model has the advantages that the needle opening adopts the bevel structure, so that the resistance during puncturing can be reduced, the operation is more convenient, the working intensity of medical staff is lightened, the heparin cap structure is prevented from being damaged, the protecting parts of the protecting structure are covered on the two opposite sides of the needle opening, and the needle head can be prevented from being directly contacted. Drawings In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inven