Method for connecting a first component to a second component

Patent metadata

Field	Value
Publication number	US-11565479-B2
Application number	US-202016839030-A
Country	US
Kind code	B2
Filing date	Apr 2, 2020
Priority date	Apr 2, 2019
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

The invention relates to a method for connecting a first component, in particular a lancing means, to a second component, in particular a syringe body, in order to produce a product for medical or cosmetic purposes, by means of adhesion, having the following steps: (a) providing the first and the second component; (b) tempering at least one first contact surface of the first component and/or at least one second contact surface of the second component to a temperature T 1 ; and (c) applying an adhesive to at least one portion of the first contact surface and/or to at least one portion of the second contact surface, wherein the adhesive is at a temperature T 2 , wherein temperatures T 1 and T 2 differ only by a tolerance deviation, wherein the tolerance deviation is at most 10° C.

First claim

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. A method for connecting a first component, in the form of a lancing means, to a second component, in the form of a syringe body, in order to produce a product for medical or cosmetic purposes, by means of adhesion, comprising the following steps:
(a) Providing the first and the second component, wherein the first and the second components are at a room temperature of approximately 20° C.;
(b) Changing the temperature of at least one first contact surface of the first component and at least one second contact surface of the second component to a temperature T 1 ; and
(c) After step (b), applying an adhesive to at least one portion of the first contact surface and/or to at least one portion of the second contact surface, wherein the adhesive is at a temperature T 2 , wherein temperatures T 1 and T 2 only differ by a tolerance deviation, wherein the tolerance deviation is at most 3° C., wherein temperature T 2 is larger than 25 degrees C., wherein the adhesive is a viscous organic adhesive, wherein the adhesive has a required viscosity at temperature T 2 , and an impairment of the required viscosity of the adhesive is excluded, due to the difference of the temperatures T 1 and T 2 only by a tolerance deviation,
wherein the adhesive is urethane methacrylate, wherein at 25° C., such an adhesive has a viscosity of 1000 to 2000 mPa s, wherein a sufficient reduction in viscosity requires a temperature range between 39° C. and 46° C.

2. The method according to claim 1 , wherein changing the temperature in step (b) can take place directly or indirectly, wherein, in the case of changing the temperature directly, a tempering medium directly touches the at least one first contact surface and/or at least one second contact surface, wherein, in the case of changing the temperature indirectly, a tempering medium touches a tempering region of the first component and/or second component, wherein the tempering region of the first component and/or the second component comprises or surrounds the contact surface of the respective component or is arranged in the immediate vicinity of this contact surface.

3. The method according to claim 1 , wherein the second component has a receiving volume, which is limited, at least in portions, by the second contact surface, wherein the first component is arranged in portions within the receiving volume, wherein, given an arrangement of the first component within the receiving volume, the first and the second contact surface are opposite each other, wherein, given an arrangement of the first component within the receiving volume at least in portions between the contact surfaces, an adhesive cavity is formed.

4. The method according to claim 3 , wherein after step (b), the first component is introduced into the receiving volume of the second component at least in portions, wherein, in step (c), the adhesive is applied to the entire first contact surface and the entire second contact surface by filling the adhesive cavity with adhesive.

5. The method according to claim 3 , wherein after step (c), the first component is introduced into the receiving volume of the second component at least in portions, wherein, in step (c), the adhesive is applied to at least one portion of the first contact surface or to at least one portion of the second contact surface, wherein the amount of adhesive applied is measured such that the adhesive cavity is filled.

6. The method according to claim 3 , wherein the syringe body has a reservoir in which a medium provided for administration can be stored, wherein the reservoir has a proximal opening of the syringe body, wherein the syringe body has a distal end region, in which a lancing means channel is provided, wherein the lancing means channel corresponds to the receiving volume of the second component, wherein the distal end region has a distal opening of the syringe body, wherein the syringe body has a transition region, which is arranged between the distal end region and the reservoir.

7. The method according to claim 6 , wherein the temperature of the second contact surface is changed indirectly, wherein the temperature of at least a portion of an outer surface of the distal end region is changed by means of a second tempering device, wherein the temperature of the second contact surface is changed by means of thermal diffusion from the outer surface of the distal end region to the second contact surface, or from the second contact surface to the outer surface of the distal end region.

8. The method according to claim 6 , wherein the temperature of the second contact surface is changed directly, wherein a second tempering medium is introduced by a second tempering device into the lancing means channel of the distal end region, wherein the tempering device is placed at a distal opening of the lancing means channel, wherein the second tempering medium is removed from the syringe body by a discharge device, wherein the discharge device is arranged in the transition region, wherein the discharge device comprises a sealing device which is sealingly arranged on an inner wall of the transition region, so that no tempering medium gets into the reservoir.

9. The method according to claim 1 , wherein in step (b) the at least one first contact surface of the first component and at least one second contact surface of the second component are heated to the temperature T 1 , wherein without the change of temperature according to step (b), the temperature compensation upon contact of the adhesive with the contact surfaces would accordingly decrease the adhesive temperature T 2 , as a result of which the viscosity of the adhesive increases.

10. The method according to claim 1 , wherein the first contact surface is pretreated before step (c), wherein this pretreatment of the first contact surface is selected from the group including cleaning, mechanical pretreatment, chemical pretreatment, thermal pretreatment, electrochemical pretreatment, physical pretreatment, wherein the second contact surface is pretreated before step (c), wherein the pretreatment of the second contact surface is selected from the group including cleaning, mechanical pretreatment, chemical pretreatment, thermal pretreatment, electrochemical pretreatment, physical pretreatment.

11. The method according to claim 1 , wherein a first tempering medium is used for changing the temperature of the first component, wherein a second tempering medium is used for changing the temperature of the second component, wherein the first and/or the second tempering medium can be a fluid or electromagnetic radiation, wherein the first tempering medium is supplied to the first component by a first tempering device, wherein the second tempering medium is supplied to the second component by a second tempering device.

12. The method according to claim 11 , wherein the second tempering device and an application device for the adhesive are stationarily arranged in an apparatus for connecting two components, wherein the second component is guided by a first transport device to a processing position of the second tempering device and/or of the application device for the adhesive, wherein a second transport device introduces the first component into the second component or attaches the same to the second component.

Assignees

• Gerresheimer Regensburg Gmbh

Inventors

• Daniel Christian

Classifications

• A61M5/349 Primary

  using adhesive bond or glues · CPC title

• A61M5/343

  Connection of needle cannula to needle hub, or directly to syringe nozzle without a needle hub (A61M5/322 takes precedence) · CPC title

• A61M2207/10

  Device therefor · CPC title

• B29C65/02 Primary

  by heating, with or without pressure · CPC title

• B29C65/52

  characterised by the way of} applying the adhesive {(B29C65/50 takes precedence; apparatus for applying liquids in general B05C; processes for applying liquids in general B05D) · CPC title